Cognomen Amrain (อัมรินทร์ 
, Amrain 
, Амраин 
) , in the entire world, is a rare surname. The last name Amrain is characteristic of Thailand, where it is a rare surname, Kazakhstan, where it is a very rare surname, and Italy. Not in comparison with a country's population, this name is the most popular in Thailand, Indonesia, and Italy. More prevalently, Amrain is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| อัมรินทร์ | Thailand |
| Amrain | Germany, Indonesia, Italy, Thailand, Pakistan |
| Амраин | Kazakhstan, Russia |
| susanne amrain German specialist in literature, translator and writer (1943-2008), DE (b. 1943) |
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| amrain ismail-essop South African actress, ZA (b. 1975) |
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