Last name Rengei (Rengei 
) , across the world, is a very rare cognomen. The family name Rengei is habitual in Hungary, where it is a rare surname, and Brazil, where it is an extremely rare surname. Very seldom, Rengei is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rengei | India, Hungary, Brazil, Philippines |