Cognomen ايهان (Ayhan 
, ايهان 
) , in the entire world, is a common family name. The family name ايهان is characteristic of Turkey, where it is quite a common surname, Bulgaria, where it is quite a rare surname, and Azerbaijan. Not in comparison with a country's population, it most frequently occurs in Turkey, Germany, and France. More frequently, ايهان is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ayhan | Azerbaijan, Iraq, France, Germany, Turkey |
| ايهان | Syria, Palestinian Territory, Jordan, Iraq, Iran |