Globally, Kalwan (Kalwan 
) is a rare mostly masculine, but infrequently feminine forename. The first name Kalwan is characteristic of Brazil, where it is a very rare masculine name, Indonesia, and India, where it is an extremely rare unisex name. Also, Kalwan is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Kalwan | Indonesia, Tanzania, India, Bahrain, Brazil |