Family name Райена (Rajena 
, Rayena 
, Райена 
) , throughout the world, is a rare surname. The cognomen Райена is habitual in the Democratic Republic of the Congo, where it is a rare surname, Algeria, where it is a very rare surname, and Kyrgyzstan. Measured by absolute frequency, it is commonest in the Democratic Republic of the Congo, India, and Algeria. More prevalently, Райена is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rajena | Bangladesh, United States, Malaysia, Philippines, India |
| Rayena | United States, Philippines, Democratic Republic of the Congo, India, Algeria |
| Райена | Kyrgyzstan, Russia |