Surname 公森 (公森 
) , across the world, is a very rare last name. The family name 公森 is characteristic of Eastern Asia, particularly China, where it is an extremely rare surname. More prevalently, 公森 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 公森 | China |
| 公森太郎 JP (b. 1882) |
|