diff --git a/core/includes/theme.inc b/core/includes/theme.inc
index 303db67..44c96fe 100644
--- a/core/includes/theme.inc
+++ b/core/includes/theme.inc
@@ -1358,6 +1358,7 @@ function template_preprocess_table(&$variables) {
             $variables[$section][$row_key]['cells'][$col_key]['tag'] = $is_header ? 'th' : 'td';
             $variables[$section][$row_key]['cells'][$col_key]['attributes'] = new Attribute($cell_attributes);
             $variables[$section][$row_key]['cells'][$col_key]['content'] = $cell_content;
+            $variables[$section][$row_key]['cells'][$col_key]['label'] = $variables['header'][$col_key]['content'];
           }
         }
       }
diff --git a/core/modules/system/templates/table.html.twig b/core/modules/system/templates/table.html.twig
index 3d0252e..b6eb9ad 100644
--- a/core/modules/system/templates/table.html.twig
+++ b/core/modules/system/templates/table.html.twig
@@ -85,7 +85,7 @@
         %}
         <tr{{ row.attributes.addClass(row_classes) }}>
           {% for cell in row.cells %}
-            <{{ cell.tag }}{{ cell.attributes }}>
+            <{{ cell.tag }}{{ cell.attributes }} data-th="{{ cell.label }}">
               {{- cell.content -}}
             </{{ cell.tag }}>
           {% endfor %}
@@ -104,7 +104,7 @@
       {% for row in footer %}
         <tr{{ row.attributes }}>
           {% for cell in row.cells %}
-            <{{ cell.tag }}{{ cell.attributes }}>
+            <{{ cell.tag }}{{ cell.attributes }} data-th="{{ cell.label }}">
               {{- cell.content -}}
             </{{ cell.tag }}>
           {% endfor %}
diff --git a/core/modules/views/templates/views-view-table.html.twig b/core/modules/views/templates/views-view-table.html.twig
index 6b0b26c..c4db02c 100644
--- a/core/modules/views/templates/views-view-table.html.twig
+++ b/core/modules/views/templates/views-view-table.html.twig
@@ -61,7 +61,7 @@
     {% for row in rows %}
       <tr{{ row.attributes }}>
         {% for column in row.columns %}
-          <td{{ column.attributes }}>
+          <td{{ column.attributes }} data-th="{{ column.label }}">
             {{ column.content }}
           </td>
         {% endfor %}
diff --git a/core/modules/views/views.theme.inc b/core/modules/views/views.theme.inc
index ebef6f8..1e6ef5d 100644
--- a/core/modules/views/views.theme.inc
+++ b/core/modules/views/views.theme.inc
@@ -544,6 +544,10 @@ function template_preprocess_views_view_table(&$variables) {
         $column_reference['attributes']['class'][] = 'views-field-' . $variables['fields'][$field];
       }
 
+      if (!empty($variables['header'][$field]['content'])) {
+        $column_reference['label'] = $label;
+      }
+
       if ($classes = $fields[$field]->elementClasses($num)) {
         $column_reference['attributes']['class'][] = $classes;
       }