diff --git a/Mark-In/Sources/App/DIContainer+.swift b/Mark-In/Sources/App/DIContainer+.swift
index f73f900..d5a40e7 100644
--- a/Mark-In/Sources/App/DIContainer+.swift
+++ b/Mark-In/Sources/App/DIContainer+.swift
@@ -79,6 +79,15 @@ private extension DIContainer {
       linkRepository: resolve(),
       folderRepsoitory: resolve()
     )
+    let deleteLinkUseCase: DeleteLinkUseCase = DeleteLinkUseCaseImpl(
+      authUserManager: resolve(),
+      linkRepository: resolve()
+    )
+    let deleteFolderUseCase: DeleteFolderUseCase = DeleteFolderUseCaseImpl(
+      authUserManager: resolve(),
+      linkRepository: resolve(),
+      folderRepository: resolve()
+    )
     
     register(fetchLinkListUseCase)
     register(fetchFolderListUseCase)
@@ -87,5 +96,7 @@ private extension DIContainer {
     register(signInUseCase)
     register(signOutUseCase)
     register(withdrawalUseCase)
+    register(deleteLinkUseCase)
+    register(deleteFolderUseCase)
   }
 }
diff --git a/Mark-In/Sources/Data/DTOs/FolderDTO.swift b/Mark-In/Sources/Data/DTOs/FolderDTO.swift
index 9b2ce42..5aadbde 100644
--- a/Mark-In/Sources/Data/DTOs/FolderDTO.swift
+++ b/Mark-In/Sources/Data/DTOs/FolderDTO.swift
@@ -10,13 +10,19 @@ import Foundation
 struct FolderDTO: Codable {
   var id: String
   var name: String
-  var createdBy: Date
+  var createdAt: Date
+  
+  enum CodingKeys: String, CodingKey {
+    case id = "id"
+    case name = "name"
+    case createdAt = "createdAt"
+  }
   
   func toEntity() -> Folder {
     return Folder(
       id: self.id,
       name: self.name,
-      createdBy: self.createdBy
+      createdAt: self.createdAt
     )
   }
 }
diff --git a/Mark-In/Sources/Data/DTOs/WebLinkDTO.swift b/Mark-In/Sources/Data/DTOs/WebLinkDTO.swift
index 087d46e..832d300 100644
--- a/Mark-In/Sources/Data/DTOs/WebLinkDTO.swift
+++ b/Mark-In/Sources/Data/DTOs/WebLinkDTO.swift
@@ -14,10 +14,22 @@ struct WebLinkDTO: Codable {
   var thumbnailUrl: String?
   var faviconUrl: String?
   var isPinned: Bool
-  var createdBy: Date
+  var createdAt: Date
   var lastAccessedAt: Date?
   var folderID: String?
   
+  enum CodingKeys: String, CodingKey {
+    case id = "id"
+    case url = "url"
+    case title = "title"
+    case thumbnailUrl = "thumbnailUrl"
+    case faviconUrl = "faviconUrl"
+    case isPinned = "isPinned"
+    case createdAt = "createdAt"
+    case lastAccessedAt = "lastAccessedAt"
+    case folderID = "folderID"
+  }
+  
   func toEntity() -> WebLink {
     WebLink(
       id: self.id,
@@ -26,7 +38,7 @@ struct WebLinkDTO: Codable {
       thumbnailUrl: self.thumbnailUrl,
       faviconUrl: self.faviconUrl,
       isPinned: self.isPinned,
-      createdBy: self.createdBy,
+      createdAt: self.createdAt,
       lastAccessedAt: self.lastAccessedAt,
       folderID: self.folderID
     )
diff --git a/Mark-In/Sources/Data/FirestoreFieldKey.swift b/Mark-In/Sources/Data/FirestoreFieldKey.swift
new file mode 100644
index 0000000..4c11eb7
--- /dev/null
+++ b/Mark-In/Sources/Data/FirestoreFieldKey.swift
@@ -0,0 +1,28 @@
+//
+//  FirestoreFieldKey.swift
+//  Mark-In
+//
+//  Created by 이정동 on 6/4/25.
+//
+
+import Foundation
+
+enum FirestoreFieldKey {
+  enum Link {
+    static let id = "id"
+    static let url = "url"
+    static let title = "title"
+    static let thumbnailUrl = "thumbnailUrl"
+    static let faviconUrl = "faviconUrl"
+    static let isPinned = "isPinned"
+    static let createdAt = "createdAt"
+    static let lastAccessedAt = "lastAccessedAt"
+    static let folderID = "folderID"
+  }
+  
+  enum Folder {
+    static let id = "id"
+    static let name = "name"
+    static let createdAt = "createdAt"
+  }
+}
diff --git a/Mark-In/Sources/Data/Repositories/FolderRepositoryImpl.swift b/Mark-In/Sources/Data/Repositories/FolderRepositoryImpl.swift
index a5db1b4..705b912 100644
--- a/Mark-In/Sources/Data/Repositories/FolderRepositoryImpl.swift
+++ b/Mark-In/Sources/Data/Repositories/FolderRepositoryImpl.swift
@@ -11,7 +11,7 @@ import FirebaseFirestore
 
 struct FolderRepositoryImpl: FolderRepository {
   
-  typealias VoidCheckedContinuation = CheckedContinuation<Void, any Error>
+  typealias FolderFieldKey = FirestoreFieldKey.Folder
   
   private let db = Firestore.firestore()
   
@@ -20,27 +20,24 @@ struct FolderRepositoryImpl: FolderRepository {
     let path = FirebaseEndpoint.FirestoreDB.folders(userID: userID).path
     let folderDocRef = db.collection(path).document()
     
-    /// 2. Firestore에 저장할 DTO 객체 생성
-    let folderDTO = FolderDTO(
+    /// 2. 필드 값 생성
+    let createdAt = Date()
+    
+    /// 3. Firestore에 추가
+    try await folderDocRef.setData([
+      FolderFieldKey.id: folderDocRef.documentID,
+      FolderFieldKey.name: folder.name,
+      FolderFieldKey.createdAt: createdAt
+    ])
+    
+    /// 4. 생성된 데이터 반환
+    let folderEntity = Folder(
       id: folderDocRef.documentID,
       name: folder.name,
-      createdBy: .now
+      createdAt: .now
     )
     
-    /// 3. Firestore에 추가
-    try await withCheckedThrowingContinuation { (continuation: VoidCheckedContinuation) in
-      do {
-        try folderDocRef.setData(from: folderDTO) { error in
-          if let error { continuation.resume(throwing: error) }
-          else { continuation.resume(returning: ()) }
-        }
-      } catch {
-        continuation.resume(throwing: error)
-      }
-    }
-    
-    /// 4. DocumentID가 업데이트 된 Folder Entity로 리턴
-    return folderDTO.toEntity()
+    return folderEntity
   }
   
   func fetchAll(userID: String) async throws -> [Folder] {
@@ -57,35 +54,8 @@ struct FolderRepositoryImpl: FolderRepository {
     }
   }
   
-  func update(userID: String, folder: Folder) async throws {
-    /// 1. Folder 문서 참조 생성
-    guard let folderID = folder.id else { return }
-    let path = FirebaseEndpoint.FirestoreDB.folder(userID: userID, folderID: folderID).path
-    let folderDocRef = db.document(path)
-    
-    /// 2. Entity를 DTO로 변환
-    let folderDTO = FolderDTO(
-      id: folderDocRef.documentID,
-      name: folder.name,
-      createdBy: folder.createdBy
-    )
-    
-    /// 3. 업데이트
-    try await withCheckedThrowingContinuation { (continuation: VoidCheckedContinuation) in
-      do {
-        try folderDocRef.setData(from: folderDTO) { error in
-          if let error { continuation.resume(throwing: error) }
-          else { continuation.resume(returning: ()) }
-        }
-      } catch {
-        continuation.resume(throwing: error)
-      }
-    }
-  }
-  
-  func delete(userID: String, folder: Folder) async throws {
+  func delete(userID: String, folderID: String) async throws {
     /// 1. Folder 문서 참조 생성
-    guard let folderID = folder.id else { return }
     let path = FirebaseEndpoint.FirestoreDB.folder(userID: userID, folderID: folderID).path
     let folderDocRef = db.document(path)
     
diff --git a/Mark-In/Sources/Data/Repositories/LinkRepositoryImpl.swift b/Mark-In/Sources/Data/Repositories/LinkRepositoryImpl.swift
index f752726..8da3e35 100644
--- a/Mark-In/Sources/Data/Repositories/LinkRepositoryImpl.swift
+++ b/Mark-In/Sources/Data/Repositories/LinkRepositoryImpl.swift
@@ -14,7 +14,7 @@ import LinkMetadataKitInterface
 
 struct LinkRepositoryImpl: LinkRepository {
   
-  typealias VoidCheckedContinuation = CheckedContinuation<Void, any Error>
+  typealias LinkFieldKey = FirestoreFieldKey.Link
   
   private let db = Firestore.firestore()
   private let storage = Storage.storage().reference()
@@ -40,33 +40,37 @@ struct LinkRepositoryImpl: LinkRepository {
       metadata: metadata
     )
     
-    /// 4. Firestore에 저장할 DTO 객체 생성
-    let linkDTO = WebLinkDTO(
+    /// 4. 필드 값 설정
+    let title = link.title ?? metadata.title
+    let createdAt = Date()
+    
+    /// 5. Firestore에 추가
+    try await linkDocRef.setData([
+      LinkFieldKey.id: linkDocRef.documentID,
+      LinkFieldKey.url: link.url,
+      LinkFieldKey.title: title ?? NSNull(),
+      LinkFieldKey.thumbnailUrl: imageUrls.thumbnail ?? NSNull(),
+      LinkFieldKey.faviconUrl: imageUrls.favicon ?? NSNull(),
+      LinkFieldKey.isPinned: false,
+      LinkFieldKey.createdAt: createdAt,
+      LinkFieldKey.lastAccessedAt: NSNull(),
+      LinkFieldKey.folderID: link.folderID ?? NSNull()
+    ])
+    
+    /// 6. 생성된 데이터 반환
+    let linkEntity = WebLink(
       id: linkDocRef.documentID,
       url: link.url,
-      title: link.title ?? metadata.title,
+      title: title,
       thumbnailUrl: imageUrls.thumbnail,
       faviconUrl: imageUrls.favicon,
       isPinned: false,
-      createdBy: .now,
+      createdAt: createdAt,
       lastAccessedAt: nil,
       folderID: link.folderID
     )
     
-    /// 5. Firestore에 추가
-    try await withCheckedThrowingContinuation { (continuation: VoidCheckedContinuation) in
-      do {
-        try linkDocRef.setData(from: linkDTO) { error in
-          if let error { continuation.resume(throwing: error) }
-          else { continuation.resume(returning: ()) }
-        }
-      } catch {
-        continuation.resume(throwing: error)
-      }
-    }
-    
-    /// 6. 저장된 DTO 객체를 Entity로 변환 후 리턴
-    return linkDTO.toEntity()
+    return linkEntity
   }
   
   func fetchAll(userID: String) async throws -> [WebLink] {
@@ -83,40 +87,53 @@ struct LinkRepositoryImpl: LinkRepository {
     }
   }
   
-  func update(userID: String, link: WebLink) async throws {
+  
+  func moveLinkInFolder(
+    userID: String,
+    target linkID: String,
+    to folderID: String?
+  ) async throws {
     /// 1. Link 문서 참조 생성
-    let path = FirebaseEndpoint.FirestoreDB.link(userID: userID, linkID: link.id).path
+    let path = FirebaseEndpoint.FirestoreDB.link(userID: userID, linkID: linkID).path
     let linkDocRef = db.document(path)
     
-    /// 2. Entity를 DTO로 변환
-    let linkDTO = WebLinkDTO(
-      id: link.id,
-      url: link.url,
-      title: link.title,
-      thumbnailUrl: link.thumbnailUrl,
-      faviconUrl: link.faviconUrl,
-      isPinned: link.isPinned,
-      createdBy: link.createdBy,
-      lastAccessedAt: link.lastAccessedAt,
-      folderID: link.folderID
-    )
+    /// 2. 문서 업데이트
+    try await linkDocRef.updateData([
+      LinkFieldKey.folderID: folderID ?? NSNull()
+    ])
+  }
+  
+  func moveLinksInFolder(
+    userID: String,
+    fromFolderID: String?,
+    toFolderID: String?
+  ) async throws {
+    /// 1. Link 컬렉션 참조 생성
+    let path = FirebaseEndpoint.FirestoreDB.links(userID: userID).path
+    let linkColRef = db.collection(path)
+    
+    /// 2. 조건에 해당하는 모든 문서 가져오기
+    let querySnapshot = try await linkColRef
+      .whereField(LinkFieldKey.folderID, isEqualTo: fromFolderID ?? NSNull())
+      .getDocuments()
     
-    /// 3. 업데이트
-    try await withCheckedThrowingContinuation { (continuation: VoidCheckedContinuation) in
-      do {
-        try linkDocRef.setData(from: linkDTO) { error in
-          if let error { continuation.resume(throwing: error) }
-          else { continuation.resume(returning: ()) }
+    /// 3. 병렬 작업으로 문서 업데이트
+    try await withThrowingTaskGroup(of: Void.self) { group in
+      querySnapshot.documents.forEach { document in
+        group.addTask {
+          try await document.reference.updateData([
+            LinkFieldKey.folderID: toFolderID ?? NSNull()
+          ])
         }
-      } catch {
-        continuation.resume(throwing: error)
       }
+      
+      try await group.waitForAll()
     }
   }
   
-  func delete(userID: String, link: WebLink) async throws {
+  func delete(userID: String, linkID: String) async throws {
     /// 1. Link 문서 참조 생성
-    let path = FirebaseEndpoint.FirestoreDB.link(userID: userID, linkID: link.id).path
+    let path = FirebaseEndpoint.FirestoreDB.link(userID: userID, linkID: linkID).path
     let linkDocRef = db.document(path)
     
     /// 2. 이미지 데이터 삭제
@@ -126,6 +143,31 @@ struct LinkRepositoryImpl: LinkRepository {
     try await linkDocRef.delete()
   }
   
+  func deleteAllInFolder(userID: String, folderID: String?) async throws {
+    let path = FirebaseEndpoint.FirestoreDB.links(userID: userID).path
+    let querySnapshot = try await db.collection(path)
+      .whereField(LinkFieldKey.folderID, isEqualTo: folderID ?? NSNull())
+      .getDocuments()
+    
+    /// 3. 병렬 작업으로 데이터 삭제
+    try await withThrowingTaskGroup(of: Void.self) { group in
+      /// 모둔 문서에 순차 접근
+      querySnapshot.documents.forEach { document in
+        /// Link 데이터 삭제
+        group.addTask {
+          try await document.reference.delete()
+        }
+        
+        /// 이미지 데이터 삭제
+        group.addTask {
+          try await deleteImageData(userID: userID, fileID: document.documentID)
+        }
+      }
+      
+      try await group.waitForAll()
+    }
+  }
+  
   func deleteAll(userID: String) async throws {
     /// 1. Links 컬렉션 참조 생성
     let path = FirebaseEndpoint.FirestoreDB.links(userID: userID).path
diff --git a/Mark-In/Sources/Domain/Entities/Folder.swift b/Mark-In/Sources/Domain/Entities/Folder.swift
index 01a4cf3..8abc10e 100644
--- a/Mark-In/Sources/Domain/Entities/Folder.swift
+++ b/Mark-In/Sources/Domain/Entities/Folder.swift
@@ -10,5 +10,5 @@ import Foundation
 struct Folder: Equatable, Hashable {
   var id: String?
   var name: String
-  var createdBy: Date
+  var createdAt: Date
 }
diff --git a/Mark-In/Sources/Domain/Entities/WebLink.swift b/Mark-In/Sources/Domain/Entities/WebLink.swift
index 531f6f9..fe992ac 100644
--- a/Mark-In/Sources/Domain/Entities/WebLink.swift
+++ b/Mark-In/Sources/Domain/Entities/WebLink.swift
@@ -14,7 +14,7 @@ struct WebLink: Hashable {
   var thumbnailUrl: String?
   var faviconUrl: String?
   var isPinned: Bool
-  var createdBy: Date
+  var createdAt: Date
   var lastAccessedAt: Date?
   var folderID: String?
 }
diff --git a/Mark-In/Sources/Domain/Interfaces/FolderRepository.swift b/Mark-In/Sources/Domain/Interfaces/FolderRepository.swift
index c2152cd..2ec9b8a 100644
--- a/Mark-In/Sources/Domain/Interfaces/FolderRepository.swift
+++ b/Mark-In/Sources/Domain/Interfaces/FolderRepository.swift
@@ -10,7 +10,6 @@ import Foundation
 protocol FolderRepository {
   func create(userID: String, folder: WriteFolder) async throws -> Folder
   func fetchAll(userID: String) async throws -> [Folder]
-  func update(userID: String, folder: Folder) async throws
-  func delete(userID: String, folder: Folder) async throws
+  func delete(userID: String, folderID: String) async throws
   func deleteAll(userID: String) async throws
 }
diff --git a/Mark-In/Sources/Domain/Interfaces/LinkRepository.swift b/Mark-In/Sources/Domain/Interfaces/LinkRepository.swift
index 8238596..2e3ae77 100644
--- a/Mark-In/Sources/Domain/Interfaces/LinkRepository.swift
+++ b/Mark-In/Sources/Domain/Interfaces/LinkRepository.swift
@@ -9,8 +9,23 @@ import Foundation
 
 protocol LinkRepository {
   func create(userID: String, link: WriteLink) async throws -> WebLink
+  
   func fetchAll(userID: String) async throws -> [WebLink]
-  func update(userID: String, link: WebLink) async throws
-  func delete(userID: String, link: WebLink) async throws
+  
+  func moveLinkInFolder(
+    userID: String,
+    target linkID: String,
+    to folderID: String?
+  ) async throws
+  
+  func moveLinksInFolder(
+    userID: String,
+    fromFolderID: String?,
+    toFolderID: String?
+  ) async throws
+  
+  
+  func delete(userID: String, linkID: String) async throws
+  func deleteAllInFolder(userID: String, folderID: String?) async throws
   func deleteAll(userID: String) async throws
 }
diff --git a/Mark-In/Sources/Domain/UseCases/Implements/SignInUseCaseImpl.swift b/Mark-In/Sources/Domain/UseCases/Implements/Auth/SignInUseCaseImpl.swift
similarity index 100%
rename from Mark-In/Sources/Domain/UseCases/Implements/SignInUseCaseImpl.swift
rename to Mark-In/Sources/Domain/UseCases/Implements/Auth/SignInUseCaseImpl.swift
diff --git a/Mark-In/Sources/Domain/UseCases/Implements/SignOutUseCaseImpl.swift b/Mark-In/Sources/Domain/UseCases/Implements/Auth/SignOutUseCaseImpl.swift
similarity index 100%
rename from Mark-In/Sources/Domain/UseCases/Implements/SignOutUseCaseImpl.swift
rename to Mark-In/Sources/Domain/UseCases/Implements/Auth/SignOutUseCaseImpl.swift
diff --git a/Mark-In/Sources/Domain/UseCases/Implements/WithdrawalUseCaseImpl.swift b/Mark-In/Sources/Domain/UseCases/Implements/Auth/WithdrawalUseCaseImpl.swift
similarity index 100%
rename from Mark-In/Sources/Domain/UseCases/Implements/WithdrawalUseCaseImpl.swift
rename to Mark-In/Sources/Domain/UseCases/Implements/Auth/WithdrawalUseCaseImpl.swift
diff --git a/Mark-In/Sources/Domain/UseCases/Implements/Folder/DeleteFolderUseCaseImpl.swift b/Mark-In/Sources/Domain/UseCases/Implements/Folder/DeleteFolderUseCaseImpl.swift
new file mode 100644
index 0000000..9e5c402
--- /dev/null
+++ b/Mark-In/Sources/Domain/UseCases/Implements/Folder/DeleteFolderUseCaseImpl.swift
@@ -0,0 +1,50 @@
+//
+//  DeleteFolderUseCaseImpl.swift
+//  Mark-In
+//
+//  Created by 이정동 on 6/3/25.
+//
+
+import Foundation
+
+struct DeleteFolderUseCaseImpl: DeleteFolderUseCase {
+  
+  private let authUserManager: AuthUserManager
+  
+  private let linkRepository: LinkRepository
+  private let folderRepository: FolderRepository
+  
+  init(
+    authUserManager: AuthUserManager,
+    linkRepository: LinkRepository,
+    folderRepository: FolderRepository
+  ) {
+    self.authUserManager = authUserManager
+    self.linkRepository = linkRepository
+    self.folderRepository = folderRepository
+  }
+  
+  func execute(folderID: String?, includingChildren: Bool) async throws {
+    guard let userID = authUserManager.user?.id else {
+      throw AuthError.unauthenticated
+    }
+    
+    /// 폴더 하위 데이터까지 삭제
+    if includingChildren {
+      try await linkRepository.deleteAllInFolder(userID: userID, folderID: folderID)
+      
+    /// 폴더 하위 데이터는 삭제하지 않음 -> 기본 폴더로 위치 변경시키기
+    } else {
+      try await linkRepository.moveLinksInFolder(
+        userID: userID,
+        fromFolderID: folderID,
+        toFolderID: nil
+      )
+    }
+    
+    /// 폴더ID가 존재할 경우 (= 기본 폴더가 아닌 경우) 폴더 삭제
+    if let folderID {
+      try await folderRepository.delete(userID: userID, folderID: folderID)
+    }
+  }
+}
diff --git a/Mark-In/Sources/Domain/UseCases/Implements/FetchFolderListUseCaseImpl.swift b/Mark-In/Sources/Domain/UseCases/Implements/Folder/FetchFolderListUseCaseImpl.swift
similarity index 100%
rename from Mark-In/Sources/Domain/UseCases/Implements/FetchFolderListUseCaseImpl.swift
rename to Mark-In/Sources/Domain/UseCases/Implements/Folder/FetchFolderListUseCaseImpl.swift
diff --git a/Mark-In/Sources/Domain/UseCases/Implements/GenerateFolderUseCaseImpl.swift b/Mark-In/Sources/Domain/UseCases/Implements/Folder/GenerateFolderUseCaseImpl.swift
similarity index 100%
rename from Mark-In/Sources/Domain/UseCases/Implements/GenerateFolderUseCaseImpl.swift
rename to Mark-In/Sources/Domain/UseCases/Implements/Folder/GenerateFolderUseCaseImpl.swift
diff --git a/Mark-In/Sources/Domain/UseCases/Implements/Link/DeleteLinkUseCaseImpl.swift b/Mark-In/Sources/Domain/UseCases/Implements/Link/DeleteLinkUseCaseImpl.swift
new file mode 100644
index 0000000..1251cf6
--- /dev/null
+++ b/Mark-In/Sources/Domain/UseCases/Implements/Link/DeleteLinkUseCaseImpl.swift
@@ -0,0 +1,27 @@
+//
+//  DeleteLinkUseCaseImpl.swift
+//  Mark-In
+//
+//  Created by 이정동 on 6/3/25.
+//
+
+import Foundation
+
+struct DeleteLinkUseCaseImpl: DeleteLinkUseCase {
+  
+  private let authUserManager: AuthUserManager
+  private let linkRepository: LinkRepository
+  
+  init(authUserManager: AuthUserManager, linkRepository: LinkRepository) {
+    self.authUserManager = authUserManager
+    self.linkRepository = linkRepository
+  }
+  
+  func execute(linkID: String) async throws {
+    guard let userID = authUserManager.user?.id else {
+      throw AuthError.unauthenticated
+    }
+    
+    try await linkRepository.delete(userID: userID, linkID: linkID)
+  }
+}
diff --git a/Mark-In/Sources/Domain/UseCases/Implements/FetchLinkListUseCaseImpl.swift b/Mark-In/Sources/Domain/UseCases/Implements/Link/FetchLinkListUseCaseImpl.swift
similarity index 100%
rename from Mark-In/Sources/Domain/UseCases/Implements/FetchLinkListUseCaseImpl.swift
rename to Mark-In/Sources/Domain/UseCases/Implements/Link/FetchLinkListUseCaseImpl.swift
diff --git a/Mark-In/Sources/Domain/UseCases/Implements/GenerateLinkUseCaseImpl.swift b/Mark-In/Sources/Domain/UseCases/Implements/Link/GenerateLinkUseCaseImpl.swift
similarity index 100%
rename from Mark-In/Sources/Domain/UseCases/Implements/GenerateLinkUseCaseImpl.swift
rename to Mark-In/Sources/Domain/UseCases/Implements/Link/GenerateLinkUseCaseImpl.swift
diff --git a/Mark-In/Sources/Domain/UseCases/Interfaces/SignInUseCase.swift b/Mark-In/Sources/Domain/UseCases/Interfaces/Auth/SignInUseCase.swift
similarity index 100%
rename from Mark-In/Sources/Domain/UseCases/Interfaces/SignInUseCase.swift
rename to Mark-In/Sources/Domain/UseCases/Interfaces/Auth/SignInUseCase.swift
diff --git a/Mark-In/Sources/Domain/UseCases/Interfaces/SignOutUseCase.swift b/Mark-In/Sources/Domain/UseCases/Interfaces/Auth/SignOutUseCase.swift
similarity index 100%
rename from Mark-In/Sources/Domain/UseCases/Interfaces/SignOutUseCase.swift
rename to Mark-In/Sources/Domain/UseCases/Interfaces/Auth/SignOutUseCase.swift
diff --git a/Mark-In/Sources/Domain/UseCases/Interfaces/WithdrawalUseCase.swift b/Mark-In/Sources/Domain/UseCases/Interfaces/Auth/WithdrawalUseCase.swift
similarity index 100%
rename from Mark-In/Sources/Domain/UseCases/Interfaces/WithdrawalUseCase.swift
rename to Mark-In/Sources/Domain/UseCases/Interfaces/Auth/WithdrawalUseCase.swift
diff --git a/Mark-In/Sources/Domain/UseCases/Interfaces/Folder/DeleteFolderUseCase.swift b/Mark-In/Sources/Domain/UseCases/Interfaces/Folder/DeleteFolderUseCase.swift
new file mode 100644
index 0000000..497c786
--- /dev/null
+++ b/Mark-In/Sources/Domain/UseCases/Interfaces/Folder/DeleteFolderUseCase.swift
@@ -0,0 +1,12 @@
+//
+//  DeleteFolderUseCase.swift
+//  Mark-In
+//
+//  Created by 이정동 on 6/3/25.
+//
+
+import Foundation
+
+protocol DeleteFolderUseCase {
+  func execute(folderID: String?, includingChildren: Bool) async throws
+}
diff --git a/Mark-In/Sources/Domain/UseCases/Interfaces/FetchFolderListUseCase.swift b/Mark-In/Sources/Domain/UseCases/Interfaces/Folder/FetchFolderListUseCase.swift
similarity index 100%
rename from Mark-In/Sources/Domain/UseCases/Interfaces/FetchFolderListUseCase.swift
rename to Mark-In/Sources/Domain/UseCases/Interfaces/Folder/FetchFolderListUseCase.swift
diff --git a/Mark-In/Sources/Domain/UseCases/Interfaces/GenerateFolderUseCase.swift b/Mark-In/Sources/Domain/UseCases/Interfaces/Folder/GenerateFolderUseCase.swift
similarity index 100%
rename from Mark-In/Sources/Domain/UseCases/Interfaces/GenerateFolderUseCase.swift
rename to Mark-In/Sources/Domain/UseCases/Interfaces/Folder/GenerateFolderUseCase.swift
diff --git a/Mark-In/Sources/Domain/UseCases/Interfaces/Link/DeleteLinkUseCase.swift b/Mark-In/Sources/Domain/UseCases/Interfaces/Link/DeleteLinkUseCase.swift
new file mode 100644
index 0000000..2dfd783
--- /dev/null
+++ b/Mark-In/Sources/Domain/UseCases/Interfaces/Link/DeleteLinkUseCase.swift
@@ -0,0 +1,12 @@
+//
+//  DeleteLinkUseCase.swift
+//  Mark-In
+//
+//  Created by 이정동 on 6/3/25.
+//
+
+import Foundation
+
+protocol DeleteLinkUseCase {
+  func execute(linkID: String) async throws
+}
diff --git a/Mark-In/Sources/Domain/UseCases/Interfaces/FetchLinkListUseCase.swift b/Mark-In/Sources/Domain/UseCases/Interfaces/Link/FetchLinkListUseCase.swift
similarity index 100%
rename from Mark-In/Sources/Domain/UseCases/Interfaces/FetchLinkListUseCase.swift
rename to Mark-In/Sources/Domain/UseCases/Interfaces/Link/FetchLinkListUseCase.swift
diff --git a/Mark-In/Sources/Domain/UseCases/Interfaces/GenerateLinkUseCase.swift b/Mark-In/Sources/Domain/UseCases/Interfaces/Link/GenerateLinkUseCase.swift
similarity index 100%
rename from Mark-In/Sources/Domain/UseCases/Interfaces/GenerateLinkUseCase.swift
rename to Mark-In/Sources/Domain/UseCases/Interfaces/Link/GenerateLinkUseCase.swift
diff --git a/Mark-In/Sources/Feature/AddFolder/AddFolderReducer.swift b/Mark-In/Sources/Feature/AddFolder/AddFolderReducer.swift
index 2c90e9a..4ecdd43 100644
--- a/Mark-In/Sources/Feature/AddFolder/AddFolderReducer.swift
+++ b/Mark-In/Sources/Feature/AddFolder/AddFolderReducer.swift
@@ -18,7 +18,7 @@ struct AddFolderReducer: Reducer {
   }
   
   enum Action {
-    case didTapAddFolderButton(name: String)
+    case didTapAddFolderButton(WriteFolder)
     case didCompleteSave(Folder)
     case updateErrorState(Bool)
   }
@@ -27,12 +27,11 @@ struct AddFolderReducer: Reducer {
   
   func reduce(into state: inout State, action: Action) -> Effect<Action> {
     switch action {
-    case .didTapAddFolderButton(let name):
+    case .didTapAddFolderButton(let writeFolder):
       state.isLoading = true
       
       return .run {
         do {
-          let writeFolder = WriteFolder(name: name)
           let result = try await self.generateFolderUseCase.execute(writeFolder: writeFolder)
           return .didCompleteSave(result)
         } catch {
diff --git a/Mark-In/Sources/Feature/AddFolder/AddFolderView.swift b/Mark-In/Sources/Feature/AddFolder/AddFolderView.swift
index 458de0c..c3d8837 100644
--- a/Mark-In/Sources/Feature/AddFolder/AddFolderView.swift
+++ b/Mark-In/Sources/Feature/AddFolder/AddFolderView.swift
@@ -16,7 +16,7 @@ struct AddFolderView: View {
     initialState: AddFolderReducer.State(),
     reducer: AddFolderReducer()
   )
-  @State private var title: String = ""
+  @State private var name: String = ""
   
   private var isSaving: Bool {
     store.state.isLoading
@@ -29,7 +29,7 @@ struct AddFolderView: View {
       Text("폴더를 추가:")
         .frame(maxWidth: .infinity, alignment: .leading)
       
-      TextField("", text: $title, prompt: Text("제목"))
+      TextField("", text: $name, prompt: Text("제목"))
         .textFieldStyle(.roundedBorder)
         .padding(.top, 14)
         .disabled(isSaving)
@@ -55,10 +55,11 @@ struct AddFolderView: View {
                 .stroke(.markBlack10, lineWidth: 0.5)
             }
         }
-        .disabled(title.isEmpty || isSaving)
+        .disabled(isSaving)
         
         Button {
-          store.send(.didTapAddFolderButton(name: title))
+          let writeFolder = WriteFolder(name: name)
+          store.send(.didTapAddFolderButton(writeFolder))
         } label: {
           Text("추가")
             .padding(.vertical, 4)
@@ -67,7 +68,7 @@ struct AddFolderView: View {
             .background(.markPoint)
             .clipShape(RoundedRectangle(cornerRadius: 6))
         }
-        .disabled(title.isEmpty || isSaving)
+        .disabled(name.isEmpty || isSaving)
       }
       .frame(maxWidth: .infinity, alignment: .trailing)
       .padding(.top, 18)
diff --git a/Mark-In/Sources/Feature/AddLink/AddLinkView.swift b/Mark-In/Sources/Feature/AddLink/AddLinkView.swift
index 80c5f8f..2a4b662 100644
--- a/Mark-In/Sources/Feature/AddLink/AddLinkView.swift
+++ b/Mark-In/Sources/Feature/AddLink/AddLinkView.swift
@@ -136,8 +136,8 @@ struct AddLinkView: View {
 #Preview {
   AddLinkView(
     folders: [
-      .init(id: "", name: "기본폴더", createdBy: .now),
-      .init(id: "1", name: "폴더1", createdBy: .now),
+      .init(id: "", name: "기본폴더", createdAt: .now),
+      .init(id: "1", name: "폴더1", createdAt: .now),
     ]
   ) {
     print($0)
diff --git a/Mark-In/Sources/Feature/Main/LinkListView.swift b/Mark-In/Sources/Feature/Main/LinkListView.swift
index e94c70b..47c29ff 100644
--- a/Mark-In/Sources/Feature/Main/LinkListView.swift
+++ b/Mark-In/Sources/Feature/Main/LinkListView.swift
@@ -47,7 +47,10 @@ struct LinkListView: View {
           spacing: ViewConstants.spacing
         ) {
           ForEach(links, id: \.self) { link in
-            LinkCell(link: link)
+            LinkCell(
+              store: store,
+              link: link
+            )
           }
         }
         .padding(20)
@@ -76,6 +79,7 @@ struct LinkListView: View {
 
 private struct LinkCell: View {
   
+  let store: Store<MainReducer>
   let link: WebLink
   
   var body: some View {
@@ -115,7 +119,13 @@ private struct LinkCell: View {
       RoundedRectangle(cornerRadius: 6)
         .stroke(.markBlack20, lineWidth: 0.5)
     })
-    
+    .contextMenu {
+      Button {
+        store.send(.deleteLinkButtonTapped(link: link))
+      } label: {
+        Text("삭제")
+      }
+    }
   }
   
   private var headerTitle: some View {
@@ -149,7 +159,7 @@ private struct LinkCell: View {
           .frame(width: 5, height: 5)
       }
       
-      Text(link.createdBy.description)
+      Text(link.createdAt.description)
         .font(.pretendard(size: 10, weight: .regular))
         .foregroundStyle(.markBlack40)
         .lineLimit(1)
@@ -158,7 +168,19 @@ private struct LinkCell: View {
 }
 
 #Preview {
-  LinkCell(link: .init(id: "", url: "www.naver.com", isPinned: true, createdBy: .now))
+  let store: Store<MainReducer> = .init(
+    initialState: MainReducer.State(),
+    reducer: MainReducer()
+  )
+  LinkCell(
+    store: store,
+    link: .init(
+      id: "",
+      url: "www.naver.com",
+      isPinned: true,
+      createdAt: .now
+    )
+  )
     .frame(width: 210, height: 160)
 //  LinkListView(viewModel: MainViewModel())
 //    .frame(width: 600, height: 600)
diff --git a/Mark-In/Sources/Feature/Main/MainReducer.swift b/Mark-In/Sources/Feature/Main/MainReducer.swift
index 57b4901..d289de2 100644
--- a/Mark-In/Sources/Feature/Main/MainReducer.swift
+++ b/Mark-In/Sources/Feature/Main/MainReducer.swift
@@ -33,6 +33,9 @@ struct MainReducer: Reducer {
     case didCreateLink(WebLink)
     case didCreateFolder(Folder)
     
+    case deleteLinkButtonTapped(link: WebLink)
+    case deleteFolderButtonTapped(folder: Folder, includingChildren: Bool)
+    
     case occuredError
     
     case empty
@@ -40,6 +43,8 @@ struct MainReducer: Reducer {
   
   @Dependency private var fetchLinkListUseCase: FetchLinkListUseCase
   @Dependency private var fetchFolderListUseCase: FetchFolderListUseCase
+  @Dependency private var deleteLinkUseCase: DeleteLinkUseCase
+  @Dependency private var deleteFolderUseCase: DeleteFolderUseCase
   
   func reduce(into state: inout State, action: Action) -> Effect<Action> {
     switch action {
@@ -59,10 +64,10 @@ struct MainReducer: Reducer {
       
       state.links = links
       
-      state.folderTabs.append(.folder(.init(id: nil, name: "기본폴더", createdBy: .now)))
+      state.folderTabs = [.folder(.init(id: nil, name: "기본폴더", createdAt: .now))]
       folders.forEach {
         state.folderTabs.append(
-          .folder(.init(id: $0.id, name: $0.name, createdBy: $0.createdBy))
+          .folder(.init(id: $0.id, name: $0.name, createdAt: $0.createdAt))
         )
       }
       
@@ -85,6 +90,28 @@ struct MainReducer: Reducer {
       state.folderTabs.append(.folder(folder))
       return .none
       
+    case .deleteLinkButtonTapped(let link):
+      state.isLoading = true
+      return .run {
+        do {
+          try await self.deleteLinkUseCase.execute(linkID: link.id)
+          return .onAppear
+        } catch {
+          return .occuredError
+        }
+      }
+      
+    case let .deleteFolderButtonTapped(folder, includingChildren):
+      state.isLoading = true
+      return .run {
+        do {
+          try await self.deleteFolderUseCase.execute(folderID: folder.id, includingChildren: includingChildren)
+          return .onAppear
+        } catch {
+          return .occuredError
+        }
+      }
+      
       // TODO: 에러 처리 로직 추가
     case .occuredError:
       return .none
diff --git a/Mark-In/Sources/Feature/Main/SideBar.swift b/Mark-In/Sources/Feature/Main/SideBar.swift
index 90a4ad5..87f8ee2 100644
--- a/Mark-In/Sources/Feature/Main/SideBar.swift
+++ b/Mark-In/Sources/Feature/Main/SideBar.swift
@@ -13,6 +13,9 @@ import ReducerKit
 struct SideBar: View {
   let store: Store<MainReducer>
   
+  @State private var isPresentedDialog: Bool = false
+  @State private var deleteFolder: Folder?
+  
   var body: some View {
     VStack(alignment: .leading) {
       
@@ -39,6 +42,17 @@ struct SideBar: View {
             NavigationLink(value: tab) {
               Label(tab.title, systemImage: tab.icon)
             }
+            .contextMenu {
+              if case .folder(let folder) = tab {
+                Button {
+                  isPresentedDialog = true
+                  deleteFolder = folder
+                } label: {
+                  Text("삭제")
+                }
+                .disabled(folder.id == nil)
+              }
+            }
           }
         }
       }
@@ -60,6 +74,36 @@ struct SideBar: View {
       .padding([.bottom, .leading], 10)
     }
     .buttonStyle(.plain)
+    .confirmationDialog(
+      "이 폴더를 삭제하시겠습니까?",
+      isPresented: $isPresentedDialog
+    ) {
+      Button(role: .destructive) {
+        store.send(.deleteFolderButtonTapped(
+          folder: deleteFolder!,
+          includingChildren: false
+        ))
+      } label: {
+        Text("폴더만 삭제")
+      }
+      
+      Button(role: .destructive) {
+        store.send(.deleteFolderButtonTapped(
+          folder: deleteFolder!,
+          includingChildren: true
+        ))
+      } label: {
+        Text("폴더와 링크 삭제")
+      }
+
+      Button(role: .cancel) {
+        deleteFolder = nil
+      } label: {
+        Text("취소")
+      }
+    } message: {
+      Text("이 폴더를 삭제하면 하위 링크도 함께 삭제하거나, 그대로 유지할 수 있습니다.")
+    }
   }
 }