In all the world, Масуко (Masuko 
, 益子 
, Масуко) is quite a rare predominantly feminine, but very infrequently male first name. The given name Масуко is characteristic of Japan, where it is quite a rare feminine name, South Africa, where it is a very rare mostly feminine, but infrequently masculine name, and China, where it is a very rare unisex name. Much less frequently, Масуко is the last name as well as the forename.