In all the world, Кальин (Kalin 
, Kaline 
, Кальин 
) is a common gender-neutral forename. The forename Кальин is habitual in Aland Islands, where it is quite a common male name, Bulgaria, and Brazil, where it is quite a rare feminine name. Measured by absolute frequency, it most frequently occurs in Brazil, India, and Bulgaria. Likewise, Кальин is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Kalin | Switzerland, Brazil, Bulgaria, India, Turkey |
| Kaline | Germany, Brazil, United States, Democratic Republic of the Congo, India |
| Кальин | Russia |