Family name ردي (ردي 
, Rédei 
) , around the world, is a rare cognomen. The cognomen ردي is characteristic of Hungary, where it is quite a rare surname, Iraq, where it is a rare surname, and Morocco. In absolute terms, it is commonest in Hungary, Egypt, and Iraq. Likewise, ردي is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ردي | Morocco, Iraq, Egypt, Yemen, Saudi Arabia |
| Rédei | Hungary |