diff --git a/.github/actions/file/action.yml b/.github/actions/file/action.yml
index c5db9d5..40c6394 100644
--- a/.github/actions/file/action.yml
+++ b/.github/actions/file/action.yml
@@ -17,6 +17,10 @@ inputs:
   screenshot_repository:
     description: "Repository (with owner) where screenshots are stored on the gh-cache branch. Defaults to the 'repository' input if not set. Required if issues are open in a different repo to construct proper screenshot URLs."
     required: false
+  open_grouped_issues:
+    description: "In the 'file' step, also open grouped issues which link to all issues with the same root cause"
+    required: false
+    default: "false"
 
 outputs:
   filings:
diff --git a/.github/actions/file/src/index.ts b/.github/actions/file/src/index.ts
index edaf019..b3e35df 100644
--- a/.github/actions/file/src/index.ts
+++ b/.github/actions/file/src/index.ts
@@ -1,4 +1,4 @@
-import type {Finding, ResolvedFiling, RepeatedFiling} from './types.d.js'
+import type {Finding, ResolvedFiling, RepeatedFiling, FindingGroupIssue, Filing, IssueResponse} from './types.d.js'
 import process from 'node:process'
 import * as core from '@actions/core'
 import {Octokit} from '@octokit/core'
@@ -11,6 +11,7 @@ import {isResolvedFiling} from './isResolvedFiling.js'
 import {openIssue} from './openIssue.js'
 import {reopenIssue} from './reopenIssue.js'
 import {updateFilingsWithNewFindings} from './updateFilingsWithNewFindings.js'
+import {OctokitResponse} from '@octokit/types'
 const OctokitWithThrottling = Octokit.plugin(throttling)
 
 export default async function () {
@@ -22,10 +23,12 @@ export default async function () {
   const cachedFilings: (ResolvedFiling | RepeatedFiling)[] = JSON.parse(
     core.getInput('cached_filings', {required: false}) || '[]',
   )
+  const shouldOpenGroupedIssues = core.getBooleanInput('open_grouped_issues')
   core.debug(`Input: 'findings: ${JSON.stringify(findings)}'`)
   core.debug(`Input: 'repository: ${repoWithOwner}'`)
   core.debug(`Input: 'screenshot_repository: ${screenshotRepo}'`)
   core.debug(`Input: 'cached_filings: ${JSON.stringify(cachedFilings)}'`)
+  core.debug(`Input: 'open_grouped_issues: ${shouldOpenGroupedIssues}'`)
 
   const octokit = new OctokitWithThrottling({
     auth: token,
@@ -48,8 +51,12 @@ export default async function () {
   })
   const filings = updateFilingsWithNewFindings(cachedFilings, findings)
 
+  // Track new issues for grouping
+  const newIssuesByProblemShort: Record<string, FindingGroupIssue[]> = {}
+  const trackingIssueUrls: Record<string, string> = {}
+
   for (const filing of filings) {
-    let response
+    let response: OctokitResponse<IssueResponse> | undefined
     try {
       if (isResolvedFiling(filing)) {
         // Close the filing’s issue (if necessary)
@@ -58,8 +65,19 @@ export default async function () {
       } else if (isNewFiling(filing)) {
         // Open a new issue for the filing
         response = await openIssue(octokit, repoWithOwner, filing.findings[0], screenshotRepo)
-        // eslint-disable-next-line @typescript-eslint/no-explicit-any
-        ;(filing as any).issue = {state: 'open'} as Issue
+        ;(filing as Filing).issue = {state: 'open'} as Issue
+
+        // Track for grouping
+        if (shouldOpenGroupedIssues) {
+          const problemShort: string = filing.findings[0].problemShort
+          if (!newIssuesByProblemShort[problemShort]) {
+            newIssuesByProblemShort[problemShort] = []
+          }
+          newIssuesByProblemShort[problemShort].push({
+            url: response.data.html_url,
+            id: response.data.number,
+          })
+        }
       } else if (isRepeatedFiling(filing)) {
         // Reopen the filing's issue (if necessary) and update the body with the latest finding
         response = await reopenIssue(
@@ -87,6 +105,32 @@ export default async function () {
     }
   }
 
+  // Open tracking issues for groups with >1 new issue and link back from each
+  // new issue
+  if (shouldOpenGroupedIssues) {
+    for (const [problemShort, issues] of Object.entries(newIssuesByProblemShort)) {
+      if (issues.length > 1) {
+        const capitalizedProblemShort = problemShort[0].toUpperCase() + problemShort.slice(1)
+        const title: string = `${capitalizedProblemShort} issues`
+        const body: string =
+          `# ${capitalizedProblemShort} issues\n\n` + issues.map(issue => `- [ ] ${issue.url}`).join('\n')
+        try {
+          const trackingResponse = await octokit.request(`POST /repos/${repoWithOwner}/issues`, {
+            owner: repoWithOwner.split('/')[0],
+            repo: repoWithOwner.split('/')[1],
+            title,
+            body,
+          })
+          const trackingUrl: string = trackingResponse.data.html_url
+          trackingIssueUrls[problemShort] = trackingUrl
+          core.info(`Opened tracking issue for '${capitalizedProblemShort}' with ${issues.length} issues.`)
+        } catch (error) {
+          core.warning(`Failed to open tracking issue for '${capitalizedProblemShort}': ${error}`)
+        }
+      }
+    }
+  }
+
   core.setOutput('filings', JSON.stringify(filings))
   core.debug(`Output: 'filings: ${JSON.stringify(filings)}'`)
   core.info("Finished 'file' action")
diff --git a/.github/actions/file/src/types.d.ts b/.github/actions/file/src/types.d.ts
index 36069a5..2c0c8ac 100644
--- a/.github/actions/file/src/types.d.ts
+++ b/.github/actions/file/src/types.d.ts
@@ -18,6 +18,14 @@ export type Issue = {
   state?: 'open' | 'reopened' | 'closed'
 }
 
+export type IssueResponse = {
+  id: number
+  node_id: string
+  number: number
+  html_url: string
+  title: string
+}
+
 export type ResolvedFiling = {
   findings: never[]
   issue: Issue
@@ -34,3 +42,8 @@ export type RepeatedFiling = {
 }
 
 export type Filing = ResolvedFiling | NewFiling | RepeatedFiling
+
+export type FindingGroupIssue = {
+  url: string
+  id: number
+}
diff --git a/README.md b/README.md
index c71fad7..66a12c3 100644
--- a/README.md
+++ b/README.md
@@ -53,6 +53,7 @@ jobs:
           # auth_context: # Optional: Stringified JSON object for complex authentication
           # skip_copilot_assignment: false # Optional: Set to true to skip assigning issues to GitHub Copilot (or if you don't have GitHub Copilot)
           # include_screenshots: false # Optional: Set to true to capture screenshots and include links to them in filed issues
+          # open_grouped_issues: false # Optional: Set to true to open an issue grouping individual issues per violation
           # reduced_motion: no-preference # Optional: Playwright reduced motion configuration option
           # color_scheme: light # Optional: Playwright color scheme configuration option
 ```
diff --git a/action.yml b/action.yml
index 063206d..794dc2e 100644
--- a/action.yml
+++ b/action.yml
@@ -35,6 +35,10 @@ inputs:
     description: "Whether to capture screenshots and include links to them in the issue"
     required: false
     default: "false"
+  open_grouped_issues:
+    description: "In the 'file' step, also open grouped issues which link to all issues with the same problem"
+    required: false
+    default: "false"
   reduced_motion:
     description: "Playwright reducedMotion setting: https://playwright.dev/docs/api/class-browser#browser-new-page-option-reduced-motion"
     required: false
@@ -102,6 +106,7 @@ runs:
         token: ${{ inputs.token }}
         cached_filings: ${{ steps.normalize_cache.outputs.value }}
         screenshot_repository: ${{ github.repository }}
+        open_grouped_issues: ${{ inputs.open_grouped_issues }}
     - if: ${{ steps.file.outputs.filings }}
       name: Get issues from filings
       id: get_issues_from_filings
diff --git a/tests/site-with-errors.test.ts b/tests/site-with-errors.test.ts
index 5ce4696..7899b86 100644
--- a/tests/site-with-errors.test.ts
+++ b/tests/site-with-errors.test.ts
@@ -16,7 +16,8 @@ describe('site-with-errors', () => {
   })
 
   it('cache has expected results', () => {
-    const actual = results.map(({issue: {url: issueUrl}, pullRequest: {url: pullRequestUrl}, findings}) => {
+    const actual = results.map(({issue: {url: issueUrl}, pullRequest, findings}) => {
+      const pullRequestUrl = pullRequest?.url
       const {problemUrl, solutionLong, screenshotId, ...finding} = findings[0]
       // Check volatile fields for existence only
       expect(issueUrl).toBeDefined()
@@ -144,19 +145,20 @@ describe('site-with-errors', () => {
       )
       // Fetch pull requests referenced in the findings file
       pullRequests = await Promise.all(
-        results.map(async ({pullRequest: {url: pullRequestUrl}}) => {
+        results.map(async ({pullRequest}) => {
+          const pullRequestUrl = pullRequest?.url
           expect(pullRequestUrl).toBeDefined()
           const {owner, repo, pullNumber} =
             /https:\/\/github\.com\/(?<owner>[^/]+)\/(?<repo>[^/]+)\/pull\/(?<pullNumber>\d+)/.exec(
               pullRequestUrl!,
             )!.groups!
-          const {data: pullRequest} = await octokit.request('GET /repos/{owner}/{repo}/pulls/{pull_number}', {
+          const {data: fetchedPullRequest} = await octokit.request('GET /repos/{owner}/{repo}/pulls/{pull_number}', {
             owner,
             repo,
             pull_number: parseInt(pullNumber, 10),
           })
-          expect(pullRequest).toBeDefined()
-          return pullRequest
+          expect(fetchedPullRequest).toBeDefined()
+          return fetchedPullRequest
         }),
       )
     })