All around the world, Bain (Bain 
, باين 
, Байн 
, among others...) is quite a common unisex forename. The first name Bain is characteristic of Sudan, where it is a rare masculine name, India, where it is a rare gender-neutral name, and Indonesia, where it is a rare principally masculine, but very seldom female name. More prevalently, Bain is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Bain | Bangladesh, India, Australia, United States, United Kingdom |
| باين | Saudi Arabia, Egypt, Sudan, Jordan, Morocco |
| Байн | Kazakhstan, Russia, Ukraine |
| ביין | Israel |
Bain is also a name for the fictitious and mythical characters: .
| sir ernest bain British politician (b. 1875) |
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| graham ward bain British writer, GB (b. 1891) |
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| wallace bain New Zealand cricketer, NZ (b. 1917) |
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| ewen bain cartoonist, GB (b. 1925) |
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| sherwood e. bain (b. 1922) |
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| lu bain American gridiron football player (1942-2011), US (b. 1942) |
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| ross bain professional golfer, GB (b. 1975) |
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| koura isobel bain Peerage person ID=287812 |
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| kinsey bain researcher ORCID ID = 0000-0003-0898-1862 |
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| duncan bain person associated with the witch trials in Scotland, GB |
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| henderson bain British Royal Navy officer, rear admiral in 1846 |
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| addison bain American scientist, US |
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| archibald bain Soldier of the Argyll and Sutherland Highlanders, GB |
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| rommel bain researcher (ORCID 0000-0002-0425-824X) |
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| earle e bain researcher |
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