Surname Chandranathan (Chandranathan 
) , across the world, is a rare last name. The family name Chandranathan is habitual in Sri Lanka, where it is a rare surname, Singapore, and Australia, where it is a very rare surname. In absolute terms, it is the most numerous in Sri Lanka, India, and the United States. Also, Chandranathan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Chandranathan | Sri Lanka, United Kingdom, India, Singapore, United States |