Family name Kasup (Kasup 
) , in all the world, is a rare last name. The surname Kasup is characteristic of Papua New Guinea, where it is quite a rare surname, Malaysia, where it is a very rare surname, and Germany. In absolute terms, it is the most numerous in Papua New Guinea, India, and Germany. Also, Kasup is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kasup | Germany, India, Papua New Guinea, Sri Lanka, Malaysia |