Cognomen ولك (Wolk 
, Ulke 
, ولك 
) , around the world, is quite a common last name. The last name ولك is characteristic of Western Europe, particularly Germany, where it is quite a rare surname, Austria, and Netherlands. Not in comparison with a country's population, it most frequently occurs in the United States, Germany, and Poland. Much less frequently, ولك is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wolk | Brazil, Netherlands, United States, Germany, Poland |
| Ulke | Brazil, Argentina, United States, Germany, India |
| ولك | Saudi Arabia, Iraq, Iran |