Cognomen Idhan (Idhan 
) , in the world, is a rare last name. The cognomen Idhan is characteristic of Malaysia, where it is a rare surname, Indonesia, and India, where it is an extremely rare surname. More frequently, Idhan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Idhan | Sweden, India, Indonesia, Malaysia, China |