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