Last name Drevnak (Drevnak 
) , across the world, is a very rare surname. The surname Drevnak is characteristic of Czechia, where it is a rare surname, the United States, where it is an extremely rare surname, and the United Kingdom. Very seldom, Drevnak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Drevnak | Czechia, United States, United Kingdom |