Surname Udaya Sankar (Udaya Sankar 
) , throughout the world, is a very rare family name. The last name Udaya Sankar is habitual in Southern Asia, particularly India, where it is an extremely rare surname. More frequently, Udaya Sankar is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Udaya Sankar | India, Sri Lanka |
Kamalenthiran, and Krishnan