Family name Кеин (Kein 
, Keine 
, Keyn ) , in the entire world, is quite a rare surname. The surname Кеин is characteristic of Malaysia, where it is quite a rare surname, Tajikistan, and North Macedonia, where it is a rare surname. Not in comparison with a country's population, this name is the most popular in Malaysia, Germany, and Myanmar. Likewise, Кеин is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kein | Germany, Democratic Republic of the Congo, Malaysia, Indonesia, Myanmar |
| Keine | Germany, Democratic Republic of the Congo, Brazil, United States, India |
| Keyn | Germany, Malaysia, Indonesia, United States, Brazil |
| Кеин | Russia, Tajikistan |