Family name Rihia (Rihia 
) , in all the world, is a rare cognomen. The surname Rihia is habitual in New Zealand, where it is a rare surname, Algeria, and Australia, where it is a very rare surname. Also, Rihia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rihia | India, Japan, Australia, New Zealand, Algeria |