Family name Kalpaha (Kalpaha 
) , in the entire world, is a very rare last name. The family name Kalpaha is characteristic of Thailand, where it is a very rare surname, and India, where it is an extremely rare surname. Very seldom, Kalpaha is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kalpaha | India, United States, Thailand |