Family name Frantishek (Франтишек 
, Frantishek 
) , throughout the world, is a very rare last name. The surname Frantishek is habitual in Bulgaria, where it is a rare surname, Nicaragua, where it is a very rare surname, and Russia, where it is an extremely rare surname. Measured by absolute frequency, it is the most numerous in Eastern Europe, particularly Bulgaria, Russia, and Ukraine. More prevalently, Frantishek is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Франтишек | Ukraine, Kazakhstan, Bulgaria, Belarus, Russia |
| Frantishek | North Macedonia, Belarus, Bulgaria, Russia, United States |