Family name Rayyam (Rayyam 
) , in all the world, is a very rare cognomen. The last name Rayyam is habitual in Morocco, where it is a rare surname, Brazil, where it is an extremely rare surname, and India. Also, Rayyam is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rayyam | Brazil, India, Philippines, Morocco |