Surname 繁夫 (Shigeo 
, 繁夫 ) , in the entire world, is quite a common family name. The surname 繁夫 is characteristic of Japan, where it is quite a rare surname, Malaysia, where it is a rare surname, and Hungary. Measured by absolute frequency, the name is most common in Japan, China, and Myanmar. Much less frequently, 繁夫 is the forename as well as the last name.