diff --git a/lib/ruby_ui/sidebar/collapsiable_sidebar.rb b/lib/ruby_ui/sidebar/collapsiable_sidebar.rb
new file mode 100644
index 00000000..a56e4266
--- /dev/null
+++ b/lib/ruby_ui/sidebar/collapsiable_sidebar.rb
@@ -0,0 +1,88 @@
+# frozen_string_literal: true
+
+module RubyUI
+  class CollapsiableSidebar < Base
+    def initialize(side: :left, variant: :sidebar, **attrs)
+      @side = side
+      @variant = variant
+      super(**attrs)
+    end
+
+    def view_template(&)
+      div(**attrs) do
+        div(**gap_element_attrs)
+        div(**content_wrapper_attrs) do
+          div(**content_attrs, &)
+        end
+      end
+    end
+
+    private
+
+    def default_attrs
+      {
+        class: "peer hidden text-sidebar-foreground md:block"
+      }
+    end
+
+    def gap_element_attrs
+      {
+        class: [
+          "relative w-[--sidebar-width] bg-transparent transition-[width]",
+          "duration-200 ease-linear",
+          "group-data-[collapsible=offcanvas]/sidebar:w-0",
+          "group-data-[side=right]/sidebar:rotate-180",
+          variant_classes
+        ]
+      }
+    end
+
+    def content_wrapper_attrs
+      {
+        class: [
+          "fixed inset-y-0 z-10 hidden h-svh w-[--sidebar-width]",
+          "transition-[left,right,width] duration-200 ease-linear md:flex",
+          content_wrapper_side_classes,
+          content_wrapper_variant_classes
+        ]
+      }
+    end
+
+    def content_attrs
+      {
+        class: [
+          "flex h-full w-full flex-col bg-sidebar",
+          "group-data-[variant=floating]/sidebar:rounded-lg",
+          "group-data-[variant=floating]/sidebar:border",
+          "group-data-[variant=floating]/sidebar:border-sidebar-border",
+          "group-data-[variant=floating]/sidebar:shadow"
+        ],
+        data: {
+          sidebar: "sidebar"
+        }
+      }
+    end
+
+    def variant_classes
+      if %i[floating inset].include?(@variant)
+        "group-data-[collapsible=icon]/sidebar:w-[calc(var(--sidebar-width-icon)_+_theme(spacing.4))]"
+      else
+        "group-data-[collapsible=icon]/sidebar:w-[--sidebar-width-icon]"
+      end
+    end
+
+    def content_wrapper_side_classes
+      return "left-0 group-data-[collapsible=offcanvas]/sidebar:left-[calc(var(--sidebar-width)*-1)]" if @side == :left
+
+      "right-0 group-data-[collapsible=offcanvas]/sidebar:right-[calc(var(--sidebar-width)*-1)]"
+    end
+
+    def content_wrapper_variant_classes
+      if %i[floating inset].include?(@variant)
+        "p-2 group-data-[collapsible=icon]/sidebar:w-[calc(var(--sidebar-width-icon)_+_theme(spacing.4)_+2px)]"
+      else
+        "group-data-[collapsible=icon]/sidebar:w-[--sidebar-width-icon] group-data-[side=left]/sidebar:border-r group-data-[side=right]/sidebar:border-l"
+      end
+    end
+  end
+end
diff --git a/lib/ruby_ui/sidebar/mobile_sidebar.rb b/lib/ruby_ui/sidebar/mobile_sidebar.rb
new file mode 100644
index 00000000..3bcbd730
--- /dev/null
+++ b/lib/ruby_ui/sidebar/mobile_sidebar.rb
@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+module RubyUI
+  class MobileSidebar < Base
+    def view_template(&)
+      div(**attrs) do
+      end
+    end
+
+    private
+
+    def default_attrs
+      {}
+    end
+  end
+end
diff --git a/lib/ruby_ui/sidebar/non_collapsible_sidebar.rb b/lib/ruby_ui/sidebar/non_collapsible_sidebar.rb
new file mode 100644
index 00000000..6d08e3f4
--- /dev/null
+++ b/lib/ruby_ui/sidebar/non_collapsible_sidebar.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+module RubyUI
+  class NonCollpapsibleSidebar < Base
+    def view_template(&)
+      div(**attrs, &)
+    end
+
+    private
+
+    def default_attrs
+      {
+        class: "flex h-full w-[--sidebar-width] flex-col bg-sidebar text-sidebar-foreground"
+      }
+    end
+  end
+end
diff --git a/lib/ruby_ui/sidebar/sidebar.rb b/lib/ruby_ui/sidebar/sidebar.rb
new file mode 100644
index 00000000..b82b9391
--- /dev/null
+++ b/lib/ruby_ui/sidebar/sidebar.rb
@@ -0,0 +1,63 @@
+# frozen_string_literal: true
+
+# "--sidebar-width": SIDEBAR_WIDTH,
+# "--sidebar-width-icon": SIDEBAR_WIDTH_ICON,
+
+# TODO: Add keyboard events
+# TODO: Open only mobile or normal sidebar
+# TODO: state => expanded, collapsed
+# TODO: cache
+
+# const MOBILE_BREAKPOINT = 768
+
+module RubyUI
+  class Sidebar < Base
+    SIDEBAR_WIDTH = "16rem"
+    SIDEBAR_WIDTH_ICON = "3rem"
+
+    SIDES = %i[left right].freeze
+    VARIANTS = %i[sidebar floating inset].freeze
+    COLLAPSIBLES = %i[offcanvas icon none].freeze
+
+    def initialize(side: :left, variant: :sidebar, collapsible: :offcanvas, open: true, **attrs)
+      raise ArgumentError, "Invalid side: #{side}. Must be one of #{SIDES}." unless SIDES.include?(side)
+      raise ArgumentError, "Invalid variant: #{variant}. Must be one of #{VARIANTS}." unless VARIANTS.include?(variant)
+      raise ArgumentError, "Invalid collapsible: #{collapsible}. Must be one of #{COLLAPSIBLES}." unless COLLAPSIBLES.include?(collapsible)
+
+      @side = side
+      @variant = variant
+      @collapsible = collapsible
+      @open = open
+      super(**attrs)
+    end
+
+    def view_template(&)
+      div(**attrs) do
+        if @collapsible == :none
+          NonCollapsiableSidebar(&)
+        else
+          MobileSidebar(&)
+          CollapsiableSidebar(&)
+        end
+      end
+    end
+
+    private
+
+    def default_attrs
+      {
+        class: "group/sidebar has-[[data-variant=inset]]:bg-sidebar",
+        style: "--sidebar-width: #{SIDEBAR_WIDTH}; --sidebar-width-icon: #{SIDEBAR_WIDTH_ICON};",
+        data: {
+          controller: "ruby-ui--sidebar",
+          state: @open ? "expanded" : "collapsed",
+          collapsible: @open ? "" : @collapsible,
+          variant: @variant,
+          side: @side,
+          ruby_ui__sidebar_open_value: @open.to_s,
+          ruby_ui__sidebar_collapsible_value: @collapsible
+        }
+      }
+    end
+  end
+end
diff --git a/lib/ruby_ui/sidebar/sidebar_content.rb b/lib/ruby_ui/sidebar/sidebar_content.rb
new file mode 100644
index 00000000..2aa968d8
--- /dev/null
+++ b/lib/ruby_ui/sidebar/sidebar_content.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+module RubyUI
+  class SidebarContent < Base
+    def view_template(&)
+      div(**attrs, &)
+    end
+
+    private
+
+    def default_attrs
+      {
+        class: "flex min-h-0 flex-1 flex-col gap-2 overflow-auto group-data-[collapsible=icon]/sidebar:overflow-hidden",
+        data: {
+          sidebar: "content"
+        }
+      }
+    end
+  end
+end
diff --git a/lib/ruby_ui/sidebar/sidebar_controller.js b/lib/ruby_ui/sidebar/sidebar_controller.js
new file mode 100644
index 00000000..7cac96a2
--- /dev/null
+++ b/lib/ruby_ui/sidebar/sidebar_controller.js
@@ -0,0 +1,66 @@
+import { Controller } from "@hotwired/stimulus";
+
+const SIDEBAR_COOKIE_NAME = "sidebar_state";
+const SIDEBAR_COOKIE_MAX_AGE = 60 * 60 * 24 * 7;
+const TRIGGER_SELECTOR = "[data-sidebar='trigger']";
+const State = {
+  EXPANDED: "expanded",
+  COLLAPSED: "collapsed",
+};
+
+export default class extends Controller {
+  static values = {
+    open: {
+      type: Boolean,
+      default: true,
+    },
+    collapsible: {
+      type: String,
+      default: "offcanvas",
+    },
+  };
+
+  connect() {
+    this.#setupTriggers();
+  }
+
+  disconnect() {
+    this.#removeTriggers();
+  }
+
+  toggle() {
+    this.openValue = !this.openValue;
+  }
+
+  openValueChanged() {
+    this.#toggleSidebarDataState();
+    this.#persistSidebarState();
+  }
+
+  #setupTriggers() {
+    this.#triggerElements().forEach((trigger) => {
+      trigger.addEventListener("click", this.toggle.bind(this));
+    });
+  }
+
+  #removeTriggers() {
+    this.#triggerElements().forEach((trigger) => {
+      trigger.removeEventListener("click", this.toggle.bind(this));
+    });
+  }
+
+  #triggerElements() {
+    return document.querySelectorAll(TRIGGER_SELECTOR);
+  }
+
+  #toggleSidebarDataState() {
+    const { dataset } = this.element;
+
+    dataset.state = this.openValue ? State.EXPANDED : State.COLLAPSED;
+    dataset.collapsible = this.openValue ? "" : this.collapsibleValue;
+  }
+
+  #persistSidebarState() {
+    document.cookie = `${SIDEBAR_COOKIE_NAME}=${this.openValue}; path=/; max-age=${SIDEBAR_COOKIE_MAX_AGE}`;
+  }
+}
diff --git a/lib/ruby_ui/sidebar/sidebar_footer.rb b/lib/ruby_ui/sidebar/sidebar_footer.rb
new file mode 100644
index 00000000..3df63e2b
--- /dev/null
+++ b/lib/ruby_ui/sidebar/sidebar_footer.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+module RubyUI
+  class SidebarFooter < Base
+    def view_template(&)
+      div(**attrs, &)
+    end
+
+    private
+
+    def default_attrs
+      {
+        class: "flex flex-col gap-2 p-2",
+        data: {
+          sidebar: "footer"
+        }
+      }
+    end
+  end
+end
diff --git a/lib/ruby_ui/sidebar/sidebar_group.rb b/lib/ruby_ui/sidebar/sidebar_group.rb
new file mode 100644
index 00000000..54e71ece
--- /dev/null
+++ b/lib/ruby_ui/sidebar/sidebar_group.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+module RubyUI
+  class SidebarGroup < Base
+    def view_template(&)
+      div(**attrs, &)
+    end
+
+    private
+
+    def default_attrs
+      {
+        class: "relative flex w-full min-w-0 flex-col p-2",
+        data: {
+          sidebar: "group"
+        }
+      }
+    end
+  end
+end
diff --git a/lib/ruby_ui/sidebar/sidebar_group_action.rb b/lib/ruby_ui/sidebar/sidebar_group_action.rb
new file mode 100644
index 00000000..b698bd78
--- /dev/null
+++ b/lib/ruby_ui/sidebar/sidebar_group_action.rb
@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+module RubyUI
+  class SidebarGroupAction < Base
+    def initialize(as: "button", **attrs)
+      @as = as
+      super(**attrs)
+    end
+
+    def view_template(&)
+      public_send(@as, **attrs, &)
+    end
+
+    private
+
+    def default_attrs
+      {
+        class: [
+          "absolute right-3 top-3.5 flex aspect-square w-5 items-center",
+          "justify-center rounded-md p-0 text-sidebar-foreground",
+          "outline-none ring-sidebar-ring transition-transform",
+          "hover:bg-sidebar-accent hover:text-sidebar-accent-foreground",
+          "focus-visible:ring-2 [&>svg]:size-4 [&>svg]:shrink-0",
+          "after:absolute after:-inset-2 after:md:hidden",
+          "group-data-[collapsible=icon]/sidebar:hidden"
+        ],
+        data: {
+          sidebar: "group-action"
+        }
+      }
+    end
+  end
+end
diff --git a/lib/ruby_ui/sidebar/sidebar_group_content.rb b/lib/ruby_ui/sidebar/sidebar_group_content.rb
new file mode 100644
index 00000000..d4c8de7c
--- /dev/null
+++ b/lib/ruby_ui/sidebar/sidebar_group_content.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+module RubyUI
+  class SidebarGroupContent < Base
+    def view_template(&)
+      div(**attrs, &)
+    end
+
+    private
+
+    def default_attrs
+      {
+        class: "w-full text-sm",
+        data: {
+          sidebar: "group-content"
+        }
+      }
+    end
+  end
+end
diff --git a/lib/ruby_ui/sidebar/sidebar_group_label.rb b/lib/ruby_ui/sidebar/sidebar_group_label.rb
new file mode 100644
index 00000000..ff0b9158
--- /dev/null
+++ b/lib/ruby_ui/sidebar/sidebar_group_label.rb
@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+module RubyUI
+  class SidebarGroupLabel < Base
+    def view_template(&)
+      div(**attrs, &)
+    end
+
+    private
+
+    def default_attrs
+      {
+        class: [
+          "flex h-8 shrink-0 items-center rounded-md px-2 text-xs",
+          "font-medium text-sidebar-foreground/70 outline-none",
+          "ring-sidebar-ring transition-[margin,opacity] duration-200",
+          "ease-linear focus-visible:ring-2 [&>svg]:size-4 [&>svg]:shrink-0",
+          "group-data-[collapsible=icon]/sidebar:-mt-8 group-data-[collapsible=icon]/sidebar:opacity-0"
+        ],
+        data: {
+          sidebar: "group-label"
+        }
+      }
+    end
+  end
+end
diff --git a/lib/ruby_ui/sidebar/sidebar_header.rb b/lib/ruby_ui/sidebar/sidebar_header.rb
new file mode 100644
index 00000000..ca2d1601
--- /dev/null
+++ b/lib/ruby_ui/sidebar/sidebar_header.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+module RubyUI
+  class SidebarHeader < Base
+    def view_template(&)
+      div(**attrs, &)
+    end
+
+    private
+
+    def default_attrs
+      {
+        class: "flex flex-col gap-2 p-2",
+        data: {
+          sidebar: "header"
+        }
+      }
+    end
+  end
+end
diff --git a/lib/ruby_ui/sidebar/sidebar_menu.rb b/lib/ruby_ui/sidebar/sidebar_menu.rb
new file mode 100644
index 00000000..959db3ef
--- /dev/null
+++ b/lib/ruby_ui/sidebar/sidebar_menu.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+module RubyUI
+  class SidebarMenu < Base
+    def view_template(&)
+      ul(**attrs, &)
+    end
+
+    private
+
+    def default_attrs
+      {
+        class: "flex w-full min-w-0 flex-col gap-1",
+        data: {
+          sidebar: "menu"
+        }
+      }
+    end
+  end
+end
diff --git a/lib/ruby_ui/sidebar/sidebar_menu_action.rb b/lib/ruby_ui/sidebar/sidebar_menu_action.rb
new file mode 100644
index 00000000..f89dd7c0
--- /dev/null
+++ b/lib/ruby_ui/sidebar/sidebar_menu_action.rb
@@ -0,0 +1,48 @@
+# frozen_string_literal: true
+
+module RubyUI
+  class SidebarMenuAction < Base
+    def initialize(as: "button", show_on_hover: false, **attrs)
+      @as = as
+      super(**attrs)
+    end
+
+    def view_template(&)
+      public_send(@as, **attrs, &)
+    end
+
+    private
+
+    def default_attrs
+      {
+        class: [
+          "absolute right-1 top-1.5 flex aspect-square w-5 items-center",
+          "justify-center rounded-md p-0 text-sidebar-foreground outline-none",
+          "ring-sidebar-ring transition-transform hover:bg-sidebar-accent",
+          "hover:text-sidebar-accent-foreground focus-visible:ring-2",
+          "peer-hover/menu-button:text-sidebar-accent-foreground",
+          "[&>svg]:size-4 [&>svg]:shrink-0",
+          "after:absolute after:-inset-2 after:md:hidden",
+          "peer-data-[size=sm]/menu-button:top-1",
+          "peer-data-[size=default]/menu-button:top-1.5",
+          "peer-data-[size=lg]/menu-button:top-2.5",
+          "group-data-[collapsible=icon]/sidebar:hidden",
+          show_on_hover_classes
+        ],
+        data: {
+          sidebar: "menu-action"
+        }
+      }
+    end
+
+    def show_on_hover_classes
+      return unless @show_on_hover
+
+      [
+        "group-focus-within/menu-item:opacity-100",
+        "group-hover/menu-item:opacity-100 data-[state=open]:opacity-100",
+        "peer-data-[active=true]/menu-button:text-sidebar-accent-foreground md:opacity-0"
+      ].join(" ")
+    end
+  end
+end
diff --git a/lib/ruby_ui/sidebar/sidebar_menu_badge.rb b/lib/ruby_ui/sidebar/sidebar_menu_badge.rb
new file mode 100644
index 00000000..40eaace3
--- /dev/null
+++ b/lib/ruby_ui/sidebar/sidebar_menu_badge.rb
@@ -0,0 +1,30 @@
+# frozen_string_literal: true
+
+module RubyUI
+  class SidebarMenuBadge < Base
+    def view_template(&)
+      div(**attrs, &)
+    end
+
+    private
+
+    def default_attrs
+      {
+        class: [
+          "pointer-events-none absolute right-1 flex h-5 min-w-5 select-none",
+          "items-center justify-center rounded-md px-1 text-xs font-medium",
+          "tabular-nums text-sidebar-foreground",
+          "peer-hover/menu-button:text-sidebar-accent-foreground",
+          "peer-data-[active=true]/menu-button:text-sidebar-accent-foreground",
+          "peer-data-[size=sm]/menu-button:top-1",
+          "peer-data-[size=default]/menu-button:top-1.5",
+          "peer-data-[size=lg]/menu-button:top-2.5",
+          "group-data-[collapsible=icon]/sidebar:hidden"
+        ],
+        data: {
+          sidebar: "menu-badge"
+        }
+      }
+    end
+  end
+end
diff --git a/lib/ruby_ui/sidebar/sidebar_menu_button.rb b/lib/ruby_ui/sidebar/sidebar_menu_button.rb
new file mode 100644
index 00000000..b03be6e3
--- /dev/null
+++ b/lib/ruby_ui/sidebar/sidebar_menu_button.rb
@@ -0,0 +1,49 @@
+# frozen_string_literal: true
+
+module RubyUI
+  class SidebarMenuButton < Base
+    VARIANT_CLASSES = {
+      default: "hover:bg-sidebar-accent hover:text-sidebar-accent-foreground",
+      outline:
+        "bg-background shadow-[0_0_0_1px_hsl(var(--sidebar-border))] hover:bg-sidebar-accent hover:text-sidebar-accent-foreground hover:shadow-[0_0_0_1px_hsl(var(--sidebar-accent))]"
+    }.freeze
+
+    SIZE_CLASSES = {
+      default: "h-8 text-sm",
+      sm: "h-7 text-xs",
+      lg: "h-12 text-sm group-data-[collapsible=icon]/sidebar:!p-0"
+    }.freeze
+
+    def initialize(as: "button", variant: :default, size: :default, active: false, **attrs)
+      raise ArgumentError, "Invalid variant: #{variant}" unless VARIANT_CLASSES.key?(variant)
+      raise ArgumentError, "Invalid size: #{size}" unless SIZE_CLASSES.key?(size)
+
+      @as = as
+      @variant = variant
+      @size = size
+      @active = active
+      super(**attrs)
+    end
+
+    def view_template(&)
+      public_send(@as, **attrs, &)
+    end
+
+    private
+
+    def default_attrs
+      {
+        class: [
+          "peer/menu-button flex w-full items-center gap-2 overflow-hidden rounded-md p-2 text-left text-sm outline-none ring-sidebar-ring transition-[width,height,padding] hover:bg-sidebar-accent hover:text-sidebar-accent-foreground focus-visible:ring-2 active:bg-sidebar-accent active:text-sidebar-accent-foreground disabled:pointer-events-none disabled:opacity-50 group-has-[[data-sidebar=menu-action]]/menu-item:pr-8 aria-disabled:pointer-events-none aria-disabled:opacity-50 data-[active=true]:bg-sidebar-accent data-[active=true]:font-medium data-[active=true]:text-sidebar-accent-foreground data-[state=open]:hover:bg-sidebar-accent data-[state=open]:hover:text-sidebar-accent-foreground group-data-[collapsible=icon]/sidebar:!size-8 group-data-[collapsible=icon]/sidebar:!p-2 [&>span:last-child]:truncate [&>svg]:size-4 [&>svg]:shrink-0",
+          VARIANT_CLASSES[@variant],
+          SIZE_CLASSES[@size]
+        ],
+        data: {
+          sidebar: "menu-button",
+          size: @size,
+          active: @active
+        }
+      }
+    end
+  end
+end
diff --git a/lib/ruby_ui/sidebar/sidebar_menu_item.rb b/lib/ruby_ui/sidebar/sidebar_menu_item.rb
new file mode 100644
index 00000000..4412c738
--- /dev/null
+++ b/lib/ruby_ui/sidebar/sidebar_menu_item.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+module RubyUI
+  class SidebarMenuItem < Base
+    def view_template(&)
+      ul(**attrs, &)
+    end
+
+    private
+
+    def default_attrs
+      {
+        class: "group/menu-item relative",
+        data: {
+          sidebar: "menu-item"
+        }
+      }
+    end
+  end
+end
diff --git a/lib/ruby_ui/sidebar/sidebar_menu_skeleton.rb b/lib/ruby_ui/sidebar/sidebar_menu_skeleton.rb
new file mode 100644
index 00000000..5190ddcd
--- /dev/null
+++ b/lib/ruby_ui/sidebar/sidebar_menu_skeleton.rb
@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+module RubyUI
+  class SidebarMenuSkeleton < Base
+    def initialize(show_icon: false, **attrs)
+      @show_icon = show_icon
+      super(**attrs)
+    end
+
+    def view_template(&)
+      div(**attrs) do
+        Skeleton(class: "size-4 rounded-md", data: {sidebar: "menu-skeleton-icon"}) if @show_icon
+        Skeleton(
+          class: "h-4 max-w-[--skeleton-width] flex-1",
+          data: {sidebar: "menu-skeleton-text"},
+          style: {"--skeleton-width" => "#{skeleton_width}%"}
+        )
+      end
+    end
+
+    private
+
+    def default_attrs
+      {
+        class: "flex h-8 items-center gap-2 rounded-md px-2",
+        data: {
+          sidebar: "menu-skeleton"
+        }
+      }
+    end
+
+    def skeleton_width
+      @_skeleton_width ||= rand(50..89)
+    end
+  end
+end
diff --git a/lib/ruby_ui/sidebar/sidebar_menu_sub.rb b/lib/ruby_ui/sidebar/sidebar_menu_sub.rb
new file mode 100644
index 00000000..ffcdba6a
--- /dev/null
+++ b/lib/ruby_ui/sidebar/sidebar_menu_sub.rb
@@ -0,0 +1,24 @@
+# frozen_string_literal: true
+
+module RubyUI
+  class SidebarMenuSub < Base
+    def view_template(&)
+      ul(**attrs, &)
+    end
+
+    private
+
+    def default_attrs
+      {
+        class: [
+          "mx-3.5 flex min-w-0 translate-x-px flex-col gap-1 border-l",
+          "border-sidebar-border px-2.5 py-0.5",
+          "group-data-[collapsible=icon]/sidebar:hidden"
+        ],
+        data: {
+          sidebar: "menu-sub"
+        }
+      }
+    end
+  end
+end
diff --git a/lib/ruby_ui/sidebar/sidebar_menu_sub_button.rb b/lib/ruby_ui/sidebar/sidebar_menu_sub_button.rb
new file mode 100644
index 00000000..0cc9bb45
--- /dev/null
+++ b/lib/ruby_ui/sidebar/sidebar_menu_sub_button.rb
@@ -0,0 +1,50 @@
+# frozen_string_literal: true
+
+module RubyUI
+  class SidebarMenuSubButton < Base
+    SIZE_CLASSES = {
+      sm: "text-xs",
+      md: "text-sm"
+    }.freeze
+
+    def initialize(as: "button", size: :md, active: false, **attrs)
+      raise ArgumentError, "Invalid size: #{size}" unless SIZE_CLASSES.key?(size)
+
+      @as = as
+      @size = size
+      @active = active
+      super(**attrs)
+    end
+
+    def view_template(&)
+      public_send(@as, **attrs, &)
+    end
+
+    private
+
+    def default_attrs
+      {
+        class: [
+          "flex h-7 min-w-0 -translate-x-px items-center gap-2 overflow-hidden",
+          "rounded-md px-2 text-sidebar-foreground outline-none",
+          "ring-sidebar-ring hover:bg-sidebar-accent",
+          "hover:text-sidebar-accent-foreground focus-visible:ring-2",
+          "active:bg-sidebar-accent active:text-sidebar-accent-foreground",
+          "disabled:pointer-events-none disabled:opacity-50",
+          "aria-disabled:pointer-events-none aria-disabled:opacity-50",
+          "[&>span:last-child]:truncate [&>svg]:size-4 [&>svg]:shrink-0",
+          "[&>svg]:text-sidebar-accent-foreground",
+          "data-[active=true]:bg-sidebar-accent",
+          "data-[active=true]:text-sidebar-accent-foreground",
+          "group-data-[collapsible=icon]/sidebar:hidden",
+          SIZE_CLASSES[@size]
+        ],
+        data: {
+          sidebar: "menu-sub-button",
+          size: @size,
+          active: @active
+        }
+      }
+    end
+  end
+end
diff --git a/lib/ruby_ui/sidebar/sidebar_menu_sub_item.rb b/lib/ruby_ui/sidebar/sidebar_menu_sub_item.rb
new file mode 100644
index 00000000..424ed78e
--- /dev/null
+++ b/lib/ruby_ui/sidebar/sidebar_menu_sub_item.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+module RubyUI
+  class SidebarMenuSubItem < Base
+    def view_template(&)
+      li(**attrs, &)
+    end
+  end
+end
diff --git a/lib/ruby_ui/sidebar/sidebar_trigger.rb b/lib/ruby_ui/sidebar/sidebar_trigger.rb
new file mode 100644
index 00000000..dcc40271
--- /dev/null
+++ b/lib/ruby_ui/sidebar/sidebar_trigger.rb
@@ -0,0 +1,41 @@
+# frozen_string_literal: true
+
+module RubyUI
+  class SidebarTrigger < Base
+    def view_template(&)
+      Button(variant: :ghost, size: :icon, **attrs) do
+        panel_left_icon
+        span(class: "sr-only") { "Toggle Sidebar" }
+      end
+    end
+
+    private
+
+    def default_attrs
+      {
+        class: "h-7 w-7 [&_svg]:pointer-events-none [&_svg]:size-4 [&_svg]:shrink-0",
+        data: {
+          sidebar: "trigger"
+        }
+      }
+    end
+
+    def panel_left_icon
+      svg(
+        xmlns: "http://www.w3.org/2000/svg",
+        width: "24",
+        height: "24",
+        viewBox: "0 0 24 24",
+        fill: "none",
+        stroke: "currentColor",
+        stroke_width: "2",
+        stroke_linecap: "round",
+        stroke_linejoin: "round",
+        class: "lucide lucide-panel-left"
+      ) do |s|
+        s.rect(width: "18", height: "18", x: "3", y: "3", rx: "2")
+        s.path(d: "M9 3v18")
+      end
+    end
+  end
+end