Cognomen Motnin (Motnin 
, Мотнин 
) , in the world, is a very rare last name. The family name Motnin is habitual in Russia, where it is a very rare surname, and France, where it is an extremely rare surname. Very seldom, Motnin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Motnin | India, France |
| Мотнин | Russia |