Cognomen Kelappan (Kelappan 
) , in all the world, is a rare surname. The surname Kelappan is characteristic of United Arab Emirates, where it is a rare surname, Malaysia, where it is a very rare surname, and India. More frequently, Kelappan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kelappan | United States, United Arab Emirates, India, Malaysia |