Get Taxonomy name from “registered_taxonomy” hook
$args is an array, not an object: function test( $taxonomy, $object_type, $args ) { echo $args[‘name’]; } add_action( ‘registered_taxonomy’, ‘test’, 10, 3 ); EDIT Using the create_term action: function my_create( $term_id, $tt_id, $taxonomy ){ $term = get_term( $term_id, $taxonomy ); echo $term->name; } add_action( ‘create_term’, ‘my_create’, 10, 3 );