Globally, Arunachalan (Arunachalan 
) is a very rare male given name. The first name Arunachalan is habitual in Southern Asia, particularly India, where it is an extremely rare boy's name. Also, Arunachalan is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Arunachalan | China, Malaysia, United States, India, Canada |