Surname Kamatsu (Kamatsu 
) , worldwide, is quite a rare last name. The cognomen Kamatsu is characteristic of Japan, where it is quite a rare surname, Argentina, where it is a very rare surname, and Philippines, where it is an extremely rare surname. Not in comparison with a country's population, it most frequently occurs in Japan, China, and Philippines. Also, Kamatsu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kamatsu | Philippines, Argentina, United States, Japan, China |