Surname Shuichi (Shuichi 
, 周一 , Шуичи 
, and others...) , throughout the world, is quite a rare family name. The surname Shuichi is habitual in Japan, where it is quite a rare surname, Hong Kong, where it is a rare surname, and Hungary. Measured by absolute frequency, the name is most common in Japan, China, and Indonesia. Likewise, Shuichi is the forename as well as the last name.