Last name Tetsuzan (Tetsuzan 
, Нагата 
) , in the world, is a rare family name. The surname Tetsuzan is habitual in Japan, where it is a rare surname, and Russia, where it is an extremely rare surname. Likewise, Tetsuzan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tetsuzan | Japan, Brazil |
| Нагата | Russia |