Cognomen 渭华 (Weihua 
, 渭华 ) , throughout the world, is quite a rare surname. The cognomen 渭华 is habitual in Taiwan, where it is a rare surname, Singapore, and Malaysia, where it is a very rare surname. Not in comparison with a country's population, it is commonest in China, Taiwan, and Indonesia. Much more prevalently, 渭华 is the forename as well as the last name.