Around the globe, Karthigasu (Karthigasu 
) is a very rare male first name. The forename Karthigasu is habitual in South-eastern Asia, particularly Malaysia, where it is a very rare masculine name. More prevalently, Karthigasu is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Karthigasu | Australia, Singapore, Pakistan, Malaysia, China |