Across the world, กาฬสิน (กาฬสิน 
) is a very rare unisex forename. The given name กาฬสิน is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare unisex name. Also, กาฬสิน is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| กาฬสิน | Thailand |