Family name Shozo (Shozo 
, 省三 , 正三 ) , in all the world, is quite a rare surname. The family name Shozo is habitual in Japan, where it is quite a rare surname, Singapore, where it is a very rare surname, and Malaysia. Measured by absolute frequency, it is the most numerous in Japan, China, and Malaysia. More prevalently, Shozo is the forename as well as the last name.