Family name Reiran (Reiran 
) , throughout the world, is a very rare cognomen. The surname Reiran is habitual in Latin America and the Caribbean, particularly Honduras, where it is a rare surname, Colombia, where it is a very rare surname, and Brazil, where it is an extremely rare surname. Also, Reiran is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Reiran | Brazil, Honduras, United States, Colombia, Japan |