Surname Karnai (Karnai 
) , all over the world, is a rare last name. The last name Karnai is characteristic of Hungary, where it is quite a rare surname, Canada, where it is a very rare surname, and the United States, where it is an extremely rare surname. Not in comparison with a country's population, it most frequently occurs in Hungary, India, and the United States. Much less frequently, Karnai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Karnai | Canada, Hungary, United States, Pakistan, India |