diff --git a/packages/block-library/src/categories/editor.scss b/packages/block-library/src/categories/editor.scss
index cf112b6fc5ff63..773a65296c06ec 100644
--- a/packages/block-library/src/categories/editor.scss
+++ b/packages/block-library/src/categories/editor.scss
@@ -5,3 +5,8 @@
 		margin-top: 6px;
 	}
 }
+
+/* Center alignment for classic themes. */
+[data-align="center"] .wp-block-categories {
+	text-align: center;
+}
diff --git a/packages/block-library/src/categories/style.scss b/packages/block-library/src/categories/style.scss
index 8cf1252800b438..b87e28a80f0f36 100644
--- a/packages/block-library/src/categories/style.scss
+++ b/packages/block-library/src/categories/style.scss
@@ -10,4 +10,8 @@
 		/*rtl:ignore*/
 		margin-left: 2em;
 	}
+	/* Only apply the text align on dropdowns, not lists. */
+	&.wp-block-categories-dropdown.aligncenter {
+		text-align: center;
+	}
 }