Cognomen 加汉 (加汉 
, Gaghan 
) , across the world, is a rare surname. The surname 加汉 is habitual in Australia, where it is a rare surname, the United States, where it is a very rare surname, and Israel. Measured by absolute frequency, this name is the most popular in the United States, China, and Australia. Likewise, 加汉 is the forename as well as the last name.