Cognomen Mithunan (Mithunan 
) , throughout the world, is a rare last name. The last name Mithunan is characteristic of Sri Lanka, where it is a rare surname, Canada, where it is an extremely rare surname, and the United States. Very seldom, Mithunan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mithunan | Canada, France, Sri Lanka, United Kingdom, India |