Cognomen Стас (Стас 
, Stas 
) , throughout the world, is a common family name. The surname Стас is habitual in Moldova, where it is quite a common surname, Belgium, and Slovakia, where it is quite a rare surname. Measured by absolute frequency, it most frequently occurs in Russia, Belgium, and Moldova. Likewise, Стас is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Стас | Russia, Belarus, Moldova, Ukraine, Slovakia |
| Stas | Russia, Belgium, Belarus, Moldova, Poland |
Estanislao, Estanislau, Stanislao, Stanislas, Stanislau, Stanislaus, Stanislav, Stanislaw, Stanislovas, Stanisłau, Stanisław, Stanko, Staņislavs, Szaniszlo, Szaniszló, Станислав, Станислао, Станислас, Станислаус, Станисловас, Станка, Станко, Станіслав, Станіславас, Станіслаў, Стасик, Стасян, Эстанислао, and スタニスワフ