Throughout the world, ムツコ (Mutsuko 
, ムツコ ) is a rare dominantly girly, but infrequently boy's forename. The first name ムツコ is habitual in Japan, where it is a very rare feminine name, the United States, where it is a very rare largely feminine, but infrequently male name, and China, where it is an extremely rare male name. Much less frequently, ムツコ is the last name as well as the forename.