Cognomen واهان (Vahan 
, واهان 
) , in all the world, is quite a rare last name. The last name واهان is characteristic of Georgia, where it is quite a rare surname, Armenia, where it is a rare surname, and Singapore. Not in comparison with a country's population, it is commonest in India, Georgia, and the United States. More prevalently, واهان is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Vahan | United States, India, Armenia, Georgia, Turkey |
| واهان | Iraq, Iran |