diff --git a/includes/abstracts/abstract-wc-rest-terms-controller.php b/includes/abstracts/abstract-wc-rest-terms-controller.php
index 8f8cbccb213..3d8eebb686a 100644
--- a/includes/abstracts/abstract-wc-rest-terms-controller.php
+++ b/includes/abstracts/abstract-wc-rest-terms-controller.php
@@ -533,6 +533,14 @@ abstract class WC_REST_Terms_Controller extends WC_REST_Controller {
 		}
 
 		$term = get_term( (int) $request['id'], $taxonomy );
+		// Get default category id.
+		$default_category_id = absint( get_option( 'default_product_cat', 0 ) );
+
+		// Prevent deleting the default product category
+		if ( $default_category_id === $term ) {
+			return new WP_Error( 'woocommerce_rest_default_product_cat_cannot_delete', __( 'Default product category cannot be deleted.', 'woocommerce' ), array( 'status' => 500 ) );
+		}
+
 		$request->set_param( 'context', 'edit' );
 		$response = $this->prepare_item_for_response( $term, $request );