Family name トウスジ (トウスジ 
, Tosuji 
) , in the entire world, is quite a rare cognomen. The surname トウスジ is habitual in Eastern Asia, particularly Japan, where it is quite a rare surname. Much less frequently, トウスジ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| トウスジ | Japan |
| Tosuji | Japan, Nigeria |