Surname ואין (Wain 
, ואין 
) , around the world, is quite a common family name. The family name ואין is characteristic of the United Kingdom, where it is quite a rare surname, Malta, and Australia. Not in comparison with a country's population, it is commonest in the United Kingdom, Myanmar, and the United States. Much less frequently, ואין is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wain | Australia, Myanmar, United Kingdom, United States, Indonesia |
| ואין | Israel |