Surname Běťák (Běťák 
) , around the world, is a very rare last name. The cognomen Běťák is characteristic of Czechia, where it is a rare surname, and Germany, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Běťák | Germany, Czechia |
| miloslav běťák CZ (b. 1927) |
|