Cognomen Koltsa (Колца 
, Koltsa 
, Кольца 
) , in the world, is a rare surname. The surname Koltsa is habitual in Estonia, where it is a rare surname, Ukraine, and Russia. Measured by absolute frequency, it is commonest in Russia, Ukraine, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Колца | Kazakhstan, Russia, Ukraine |
| Koltsa | Russia, Estonia |
| Кольца | Kyrgyzstan, Kazakhstan, Russia, Ukraine |
| Колтса | Russia |