Family name Masumitsu (Masumitsu 
) , around the world, is quite a common cognomen. The surname Masumitsu is habitual in Eastern Asia, particularly Japan, where it is quite a rare surname, and China, where it is an extremely rare surname. Likewise, Masumitsu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Masumitsu | Canada, China, United States, Japan |