Last name Чаин (Chain 
, Chayn 
, Чаин 
) , throughout the world, is a common family name. The family name Чаин is habitual in Myanmar, where it is quite a rare surname, Malaysia, and Argentina. Not in comparison with a country's population, it is commonest in Myanmar, India, and the United States. More prevalently, Чаин is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Chain | Malaysia, United States, India, Argentina, Myanmar |
| Chayn | Morocco, United States, India, Argentina, Brazil |
| Чаин | Kazakhstan, Russia |