Last name Валк (Valk 
, Valck 
, Valks 
) , around the globe, is a common surname. The last name Валк is habitual in Estonia, where it is quite a common surname, Netherlands, and Belgium. Not in comparison with a country's population, it is commonest in Netherlands, Belgium, and the United States. Much less frequently, Валк is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Valk | Belgium, United States, Netherlands, Estonia, India |
| Valck | Belgium, United States, Germany, Netherlands, Estonia |
| Valks | Belgium, United States, Germany, Netherlands, Australia |
| Валк | Russia, Kyrgyzstan, Ukraine |
| сигизмунд натанович валк Soviet historian (1887-1975), LT (b. 1887) |
|