diff --git a/content/actions/examples/using-concurrency-expressions-and-a-test-matrix.md b/content/actions/examples/using-concurrency-expressions-and-a-test-matrix.md
index f4bd1aadb4..09e6bb0555 100644
--- a/content/actions/examples/using-concurrency-expressions-and-a-test-matrix.md
+++ b/content/actions/examples/using-concurrency-expressions-and-a-test-matrix.md
@@ -49,16 +49,6 @@ topics:
 
 {% data reusables.actions.note-understanding-example %}
 
-<table style="table-layout: fixed;">
-<thead>
-  <tr>
-    <th style="width:100%"></th>
-  </tr>
-</thead>
-<tbody>
-<tr>
-<td>
-
 ```yaml{:copy}
 name: Node.js Tests
 
@@ -208,10 +198,6 @@ jobs:
           CHANGELOG_CACHE_FILE_PATH: tests/fixtures/changelog-feed.json
         run: npm test -- {% raw %}tests/${{ matrix.test-group }}/{% endraw %}
 ```
-</tr>
-</td>
-</tbody>
-</table>
 
 ## Understanding the example
 
@@ -220,8 +206,8 @@ jobs:
 <table style="table-layout: fixed;">
 <thead>
   <tr>
-    <th style="width:60%"><b>Code</b></th>
-    <th style="width:40%"><b>Explanation</b></th>
+    <th scope="col" style="width:60%"><b>Code</b></th>
+    <th scope="col" style="width:40%"><b>Explanation</b></th>
   </tr>
 </thead>
 <tbody>
diff --git a/content/actions/examples/using-scripts-to-test-your-code-on-a-runner.md b/content/actions/examples/using-scripts-to-test-your-code-on-a-runner.md
index 44de63fe31..83374aad90 100644
--- a/content/actions/examples/using-scripts-to-test-your-code-on-a-runner.md
+++ b/content/actions/examples/using-scripts-to-test-your-code-on-a-runner.md
@@ -45,16 +45,6 @@ topics:
 
 {% data reusables.actions.note-understanding-example %}
 
-<table style="table-layout: fixed;">
-<thead>
-  <tr>
-    <th style="width:100%"></th>
-  </tr>
-</thead>
-<tbody>
-<tr>
-<td>
-
 ```yaml{:copy}
 name: 'Link Checker: All English'
 
@@ -124,10 +114,6 @@ jobs:
             --check-images \
             --level critical
 ```
-</tr>
-</td>
-</tbody>
-</table>
 
 ## Understanding the example
 
@@ -136,8 +122,8 @@ jobs:
 <table style="table-layout: fixed;">
 <thead>
   <tr>
-    <th style="width:60%"><b>Code</b></th>
-    <th style="width:40%"><b>Explanation</b></th>
+    <th scope="col" style="width:60%"><b>Code</b></th>
+    <th scope="col" style="width:40%"><b>Explanation</b></th>
   </tr>
 </thead>
 <tbody>
diff --git a/content/actions/examples/using-the-github-cli-on-a-runner.md b/content/actions/examples/using-the-github-cli-on-a-runner.md
index cacbe973c5..69fbaa0988 100644
--- a/content/actions/examples/using-the-github-cli-on-a-runner.md
+++ b/content/actions/examples/using-the-github-cli-on-a-runner.md
@@ -47,16 +47,6 @@ topics:
 
 {% data reusables.actions.note-understanding-example %}
 
-<table style="table-layout: fixed;">
-<thead>
-  <tr>
-    <th style="width:70%"></th>
-  </tr>
-</thead>
-<tbody>
-<tr>
-<td>
-
 ```yaml{:copy}
 name: Check all English links
 
@@ -173,11 +163,6 @@ jobs:
             fi
           done
 ```
-</tr>
-</td>
-</tbody>
-</table>
-
 ## Understanding the example
 
 {% data reusables.actions.example-explanation-table-intro %}
@@ -185,8 +170,8 @@ jobs:
 <table style="table-layout: fixed;">
 <thead>
   <tr>
-    <th style="width:60%"><b>Code</b></th>
-    <th style="width:40%"><b>Explanation</b></th>
+    <th scope="col" style="width:60%"><b>Code</b></th>
+    <th scope="col" style="width:40%"><b>Explanation</b></th>
   </tr>
 </thead>
 <tbody>
diff --git a/content/migrations/overview/planning-your-migration-to-github.md b/content/migrations/overview/planning-your-migration-to-github.md
index bfc5b457bc..7cda2c9031 100644
--- a/content/migrations/overview/planning-your-migration-to-github.md
+++ b/content/migrations/overview/planning-your-migration-to-github.md
@@ -142,35 +142,35 @@ For some migration paths, we offer specialist tools that allow you to migrate so
 <table>
   <tr>
     <th></th>
-    <th colspan="2" style="text-align: center"><b>Destination</b></th>
+    <th scope="colgroup" colspan="2" style="text-align: center"><b>Destination</b></th>
   </tr>
   <tr>
-    <th><b>Origin</b></th>
-    <th><b>{% data variables.product.prodname_dotcom_the_website %}, including {% data variables.product.prodname_ghe_cloud %}</b></th>
-    <th><b>{% data variables.product.prodname_ghe_server %}</b></th>
+    <th scope="col"><b>Origin</b></th>
+    <th scope="col"><b>{% data variables.product.prodname_dotcom_the_website %}, including {% data variables.product.prodname_ghe_cloud %}</b></th>
+    <th scope="col"><b>{% data variables.product.prodname_ghe_server %}</b></th>
   </tr>
   <tr>
-    <th><b>Azure DevOps (Cloud only)</b></th>
+    <th scope="row"><b>Azure DevOps (Cloud only)</b></th>
     <td>{% data variables.product.prodname_importer_proper_name %}</td>
     <td>None</td>
   </tr>
   <tr>
-    <th><b>Bitbucket Server</b></th>
+    <th scope="row"><b>Bitbucket Server</b></th>
     <td><ul><li>bbs-exporter (expert-led migrations only)</li><li>{% data variables.product.prodname_importer_proper_name %} (private beta)</li></ul></td>
     <td>`bbs-exporter` (expert-led migrations only)</td>
   </tr>
   <tr>
-    <th><b>GitLab (self-managed or SaaS)</b></th>
+    <th scope="row"><b>GitLab (self-managed or SaaS)</b></th>
     <td>gl-exporter (expert-led migrations only)</td>
     <td>gl-exporter (expert-led migrations only)</td>
   </tr>
   <tr>
-    <th><b>{% data variables.product.prodname_dotcom_the_website %}, including {% data variables.product.prodname_ghe_cloud %}</b></th>
+    <th scope="row"><b>{% data variables.product.prodname_dotcom_the_website %}, including {% data variables.product.prodname_ghe_cloud %}</b></th>
     <td><ul><li>{% data variables.product.prodname_importer_proper_name %}</li><li>Enterprise Cloud Importer (expert-led migrations only)</li></ul></td>
     <td>ghe-migrator</td>
   </tr>
   <tr>
-    <th><b>{% data variables.product.prodname_ghe_server %}</b></th>
+    <th scope="row"><b>{% data variables.product.prodname_ghe_server %}</b></th>
     <td><ul><li>{% data variables.product.prodname_importer_proper_name %}</li><li>Enterprise Cloud Importer (expert-led migrations only)</li></ul></td>
     <td>ghe-migrator</td>
   </tr>
diff --git a/data/reusables/actions/supported-github-runners.md b/data/reusables/actions/supported-github-runners.md
index 829455e50e..d8fbfd51f8 100644
--- a/data/reusables/actions/supported-github-runners.md
+++ b/data/reusables/actions/supported-github-runners.md
@@ -1,9 +1,9 @@
 <table style="width:100%">
 <thead>
   <tr>
-    <th style="width:35%"><b>Runner image</b></th>
-    <th style="width:25%"><b>YAML workflow label</b></th>
-    <th style="width:40%"><b>Notes</b></th>
+    <th scope="col" style="width:35%"><b>Runner image</b></th>
+    <th scope="col" style="width:25%"><b>YAML workflow label</b></th>
+    <th scope="col" style="width:40%"><b>Notes</b></th>
   </tr>
 </thead>
 <tbody>
diff --git a/data/reusables/repositories/reaction_list.md b/data/reusables/repositories/reaction_list.md
index d1b23c8714..e1d7920bc5 100644
--- a/data/reusables/repositories/reaction_list.md
+++ b/data/reusables/repositories/reaction_list.md
@@ -1,8 +1,8 @@
 <table style="width:20%">
 <thead>
 <tr>
-<th style="text-align:left">content</th>
-<th style="text-align:left">emoji</th>
+<th scope="col" style="text-align:left">Content</th>
+<th scope="col" style="text-align:left">Emoji</th>
 </tr>
 </thead>
 <tbody>