Family name えいじ (Eiji 
, えいじ) , all around the world, is quite a rare surname. The surname えいじ is characteristic of Japan, where it is quite a rare surname, Singapore, where it is a rare surname, and Malaysia. Not in comparison with a country's population, it is commonest in Japan, China, and Indonesia. Likewise, えいじ is the forename as well as the last name.