Surname Fostyk (Fostyk 
, Фостик 
) , across the world, is a rare last name. The last name Fostyk is habitual in Eastern Europe, particularly Ukraine, where it is quite a rare surname, Belarus, where it is a rare surname, and Russia, where it is a very rare surname. Much less frequently, Fostyk is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Fostyk | Argentina, United Kingdom, United States, Poland, France |
| Фостик | Russia, Belarus, Ukraine |