Family name 成夫 (Shigeo 
, 成夫 ) , all over the world, is quite a common last name. The surname 成夫 is characteristic of Japan, where it is quite a rare surname, Malaysia, where it is a rare surname, and Hungary. Measured by absolute frequency, it most frequently occurs in Japan, China, and Myanmar. Likewise, 成夫 is the forename as well as the last name.