diff --git a/.github/workflows/build-plugin-zip.yml b/.github/workflows/build-plugin-zip.yml
index c49378361b3a0..6851aa5f63611 100644
--- a/.github/workflows/build-plugin-zip.yml
+++ b/.github/workflows/build-plugin-zip.yml
@@ -55,7 +55,8 @@ jobs:
         name: Create Release Draft and Attach Asset
         needs: build
         runs-on: ubuntu-latest
-        if: startsWith(github.ref, 'refs/tags/v')
+        if: ${{ github.repository == 'WordPress/gutenberg' && startsWith(github.ref, 'refs/tags/v') }}
+
         steps:
             - name: Set Release Version
               id: get_release_version
diff --git a/.github/workflows/create-block.yml b/.github/workflows/create-block.yml
index c8427ddbfa2cc..8ea257510b6aa 100644
--- a/.github/workflows/create-block.yml
+++ b/.github/workflows/create-block.yml
@@ -24,6 +24,7 @@ jobs:
     checks:
         name: Checks
         runs-on: ubuntu-latest
+        if: ${{ github.repository == 'WordPress/gutenberg' || github.event_name == 'pull_request' }}
         strategy:
             fail-fast: false
             matrix:
diff --git a/.github/workflows/end2end-test.yml b/.github/workflows/end2end-test.yml
index 1161c9b8e0cdb..433b52feb212c 100644
--- a/.github/workflows/end2end-test.yml
+++ b/.github/workflows/end2end-test.yml
@@ -22,9 +22,8 @@ concurrency:
 jobs:
     admin:
         name: Admin - ${{ matrix.part }}
-
         runs-on: ubuntu-latest
-
+        if: ${{ github.repository == 'WordPress/gutenberg' || github.event_name == 'pull_request' }}
         strategy:
             fail-fast: false
             matrix:
diff --git a/.github/workflows/performance.yml b/.github/workflows/performance.yml
index 8f59d35b7e392..c00810a2cb9c4 100644
--- a/.github/workflows/performance.yml
+++ b/.github/workflows/performance.yml
@@ -17,8 +17,8 @@ concurrency:
 jobs:
     performance:
         name: Run performance tests
-
         runs-on: ubuntu-latest
+        if: ${{ github.repository == 'WordPress/gutenberg' }}
 
         steps:
             - uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f # v2.3.4
diff --git a/.github/workflows/pull-request-automation.yml b/.github/workflows/pull-request-automation.yml
index 46274e7b41448..2a1c0fd61a24f 100644
--- a/.github/workflows/pull-request-automation.yml
+++ b/.github/workflows/pull-request-automation.yml
@@ -7,6 +7,7 @@ name: Pull request automation
 jobs:
     pull-request-automation:
         runs-on: ubuntu-latest
+        if: ${{ github.repository == 'WordPress/gutenberg' }}
         steps:
             # Checkout defaults to using the branch which triggered the event, which
             # isn't necessarily `trunk` (e.g. in the case of a merge).
diff --git a/.github/workflows/rnmobile-android-runner.yml b/.github/workflows/rnmobile-android-runner.yml
index 1a393327f4cf7..0b3064b88248a 100644
--- a/.github/workflows/rnmobile-android-runner.yml
+++ b/.github/workflows/rnmobile-android-runner.yml
@@ -19,6 +19,7 @@ concurrency:
 jobs:
     test:
         runs-on: macos-latest
+        if: ${{ github.repository == 'WordPress/gutenberg' || github.event_name == 'pull_request' }}
         strategy:
             matrix:
                 native-test-name: [gutenberg-editor-gallery]
diff --git a/.github/workflows/rnmobile-ios-runner.yml b/.github/workflows/rnmobile-ios-runner.yml
index 522345514758f..0522820599ff5 100644
--- a/.github/workflows/rnmobile-ios-runner.yml
+++ b/.github/workflows/rnmobile-ios-runner.yml
@@ -19,6 +19,7 @@ concurrency:
 jobs:
     test:
         runs-on: macos-latest
+        if: ${{ github.repository == 'WordPress/gutenberg' || github.event_name == 'pull_request' }}
         strategy:
             matrix:
                 native-test-name: [gutenberg-editor-gallery]
diff --git a/.github/workflows/stale-issue-needs-info.yml b/.github/workflows/stale-issue-needs-info.yml
index b537469fbafb5..4651dd7c69347 100644
--- a/.github/workflows/stale-issue-needs-info.yml
+++ b/.github/workflows/stale-issue-needs-info.yml
@@ -6,6 +6,7 @@ on:
 jobs:
     stale:
         runs-on: ubuntu-latest
+        if: ${{ github.repository == 'WordPress/gutenberg' }}
         steps:
             - uses: actions/stale@996798eb71ef485dc4c7b4d3285842d714040c4a # v3.0.17
               with:
diff --git a/.github/workflows/static-checks.yml b/.github/workflows/static-checks.yml
index b38b7be43f3a0..c47e236b7467d 100644
--- a/.github/workflows/static-checks.yml
+++ b/.github/workflows/static-checks.yml
@@ -18,8 +18,8 @@ concurrency:
 jobs:
     check:
         name: All
-
         runs-on: ubuntu-latest
+        if: ${{ github.repository == 'WordPress/gutenberg' || github.event_name == 'pull_request' }}
 
         steps:
             - uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f # v2.3.4
diff --git a/.github/workflows/storybook-pages.yml b/.github/workflows/storybook-pages.yml
index 5d9de94c4267b..4c8008f6cb37a 100644
--- a/.github/workflows/storybook-pages.yml
+++ b/.github/workflows/storybook-pages.yml
@@ -8,6 +8,7 @@ on:
 jobs:
     deploy:
         runs-on: ubuntu-latest
+        if: ${{ github.repository == 'WordPress/gutenberg' }}
         steps:
             - name: Checkout
               uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f # v2.3.4
diff --git a/.github/workflows/unit-test.yml b/.github/workflows/unit-test.yml
index 3ff5cbe47cb44..fdd4321bc0b80 100644
--- a/.github/workflows/unit-test.yml
+++ b/.github/workflows/unit-test.yml
@@ -21,6 +21,8 @@ jobs:
     unit-js:
         name: JavaScript
         runs-on: ubuntu-latest
+        if: ${{ github.repository == 'WordPress/gutenberg' || github.event_name == 'pull_request' }}
+
         strategy:
             fail-fast: false
             matrix:
@@ -59,8 +61,8 @@ jobs:
 
     unit-php:
         name: PHP
-
         runs-on: ubuntu-latest
+        if: ${{ github.repository == 'WordPress/gutenberg' || github.event_name == 'pull_request' }}
 
         steps:
             - uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f # v2.3.4
@@ -102,8 +104,8 @@ jobs:
 
     mobile-unit-js:
         name: Mobile
-
         runs-on: ubuntu-latest
+        if: ${{ github.repository == 'WordPress/gutenberg' || github.event_name == 'pull_request' }}
 
         steps:
             - uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f # v2.3.4