In the world, Ain (Ain 
, اين 
, Айн 
) is a common unisex first name. The given name Ain is characteristic of Brunei, where it is quite a common feminine name, Aruba, and Estonia, where it is quite a rare boy's name. In absolute terms, it is commonest in Pakistan, Indonesia, and India. Also, Ain is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Ain | India, Malaysia, Indonesia, Pakistan, Myanmar |
| اين | Iran, Algeria, Iraq, Egypt, Sudan |
| Айн | Ukraine, Russia, Estonia |
| Hinnis | Turkey, United Kingdom, Bulgaria |
|
ain kaalep Estonian writer and politician (1926-2020), EE (b. 1926) |
|
|
ain amjärv Estonian architect, EE (b. 1927) |
|
|
ain erik Estonian forestry personnel and conservationist, EE (b. 1932) |
|
|
ain kallis Estonian climatologist, EE (b. 1942) |
|
|
ain heinaru Estonian geneticist, EE (b. 1943) |
|
| ain rannaleet Estonian writer, EE (b. 1904) |
|
|
|
ain mäesalu Estonian archaeologist, EE (b. 1955) |
|
| ain kalmus Estonian writer and theologian, EE (b. 1906) |
|
|
|
ain saarna Estonian journalist, EE (b. 1958) |
|
| ain eenmaa Estonian clergyman, EE (b. 1909) |
|
|
|
ain tähiste Estonian lawyer and politician (b. 1960) |
|
| ain ruuvet (b. 1914) |
|
|
|
ain aaviksoo Estonian physician, EE (b. 1974) |
|
|
ain kaljurand EE (b. 1965) |
|
|
ain rool EE (b. 1966) |
|