Last name 伟加 (Weijia 
, 伟加 ) , in the entire world, is a rare surname. The cognomen 伟加 is habitual in Singapore, where it is a rare surname, Malaysia, where it is a very rare surname, and China. Measured by absolute frequency, it most frequently occurs in China, Indonesia, and Malaysia. Predominantly, 伟加 is the forename as well as the last name.