Family name Ptaček (Ptacek 
, Ptaček 
) , throughout the world, is quite a rare surname. The family name Ptaček is habitual in Czechia, where it is quite a common surname, Slovakia, where it is quite a rare surname, and Austria, where it is a rare surname. Measured by absolute frequency, this name is the most popular in Czechia, the United States, and Slovakia.
| VARIANT | COUNTRY |
|---|---|
| Ptacek | Czechia, Germany, Slovakia, United States, Austria |
| Ptaček | Croatia |