Cognomen Karthikesan (Karthikesan 
) , all around the world, is a rare surname. The last name Karthikesan is habitual in Malaysia, where it is a rare surname, Sri Lanka, and Singapore. Not in comparison with a country's population, it most frequently occurs in Malaysia, Sri Lanka, and India. Also, Karthikesan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Karthikesan | Sri Lanka, United Arab Emirates, India, Singapore, Malaysia |