Family name Shun-Ichi (俊一 
, Shun-Ichi 
, シュンイチ ) , in all the world, is a common surname. The family name Shun-Ichi is habitual in Eastern Asia, particularly Japan, where it is quite a common surname, and China, where it is a very rare surname. Very seldom, Shun-Ichi is the forename as well as the last name. Parts of the name also exists independently as a first name Shun, and a first name Ichi.