Family name 加洪 (Jiahong 
, 加洪 ) , all over the world, is quite a rare surname. The cognomen 加洪 is habitual in Taiwan, where it is quite a rare surname, Singapore, where it is a rare surname, and China, where it is a very rare surname. Measured by absolute frequency, this name is the most popular in China, Taiwan, and Spain. Much more frequently, 加洪 is the forename as well as the last name.