Family name Kajarin (Kajarin 
, Кажарин 
) , in all the world, is a very rare last name. The family name Kajarin is habitual in Belarus, where it is a rare surname, Russia, where it is a very rare surname, and Kazakhstan. Also, Kajarin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kajarin | India, Thailand, Malaysia |
| Кажарин | Russia, Belarus, Kazakhstan |