Cognomen Idni (Idni 
) , in the world, is an extremely rare surname. The surname Idni is habitual in Georgia, where it is a very rare surname, Philippines, where it is an extremely rare surname, and India. Much more frequently, Idni is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Idni | Brazil, India, Georgia, Malaysia, Croatia |