Surname Denysiak (Denysiak 
) , throughout the world, is a very rare last name. The cognomen Denysiak is habitual in Poland, where it is a very rare surname, France, and the United States, where it is an extremely rare surname. Also, Denysiak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Denysiak | Poland, United States, France |