Cognomen Нирк (Nirk 
, Нирк 
) , throughout the world, is a rare surname. The cognomen Нирк is characteristic of Suriname, where it is quite a common surname, Estonia, and Latvia, where it is a rare surname. In absolute terms, it is commonest in Estonia, Suriname, and Germany. Very seldom, Нирк is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nirk | Germany, Estonia, United States, India, Suriname |
| Нирк | Russia, Ukraine |