In all the world, Kausthubha (Kausthubha 
) is a very rare epicene forename. The first name Kausthubha is habitual in Southern Asia, particularly India, where it is an extremely rare unisex name. Very seldom, Kausthubha is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Kausthubha | India, United States |