Family name Kalein (Kalein 
) , throughout the world, is a rare surname. The family name Kalein is habitual in Bulgaria, where it is a rare surname, Myanmar, and Malaysia, where it is an extremely rare surname. Not in comparison with a country's population, the name is most common in Myanmar, Bulgaria, and Germany. Very seldom, Kalein is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kalein | Myanmar, Germany, Bulgaria, United States, Nigeria |