diff --git a/.changeset/kind-eggs-cheer.md b/.changeset/kind-eggs-cheer.md
new file mode 100644
index 00000000000..7b4a7d4bcdf
--- /dev/null
+++ b/.changeset/kind-eggs-cheer.md
@@ -0,0 +1,5 @@
+---
+"@primer/react": patch
+---
+
+Bug fix: ActionList item label weight and spacing if description exists
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diff --git a/src/ActionList/Item.tsx b/src/ActionList/Item.tsx
index 615f3b03a58..f4e28735213 100644
--- a/src/ActionList/Item.tsx
+++ b/src/ActionList/Item.tsx
@@ -221,7 +221,9 @@ export const Item = React.forwardRef<HTMLLIElement, ActionListItemProps>(
                     id={labelId}
                     sx={{
                       flexGrow: slots.description && slots.description.props.variant !== 'block' ? 0 : 1,
-                      fontWeight: slots.description && slots.description.props.variant !== 'block' ? 'bold' : 'normal',
+                      fontWeight: slots.description ? 'bold' : 'normal',
+                      marginBlockEnd:
+                        slots.description && slots.description.props.variant !== 'inline' ? '4px' : undefined,
                     }}
                   >
                     {childrenWithoutSlots}