Family name Toptun (Toptun 
) , all over the world, is a very rare last name. The cognomen Toptun is characteristic of Russia, where it is an extremely rare surname, Germany, and Ukraine. Very seldom, Toptun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Toptun | United States, Germany, Ukraine, Russia |
| andrii toptun Ukrainian distance runner (b. 1980) |
|