Last name Ayn (Ayn 
, Айн 
, آين 
) , in the world, is quite a rare surname. The last name Ayn is characteristic of Iran, where it is quite a rare surname, Malaysia, where it is a rare surname, and Bangladesh. Also, Ayn is the forename as well as the last name.
| ziyad ebu ayn politician, IL (b. 1959) |
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| caitlyn ayn researcher (ORCID 0000-0001-5114-2904) |
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| susan ayn Czech pornographic actress, CZ (b. 1991) |
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