Cognomen Rykkja (Rukka 
, Rykkja 
) , across the world, is quite a rare last name. The last name Rykkja is habitual in Indonesia, where it is a rare surname, Norway, and Malaysia, where it is a very rare surname. Measured by absolute frequency, it is the most numerous in Indonesia, India, and Malaysia. Also, Rykkja is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rukka | Indonesia, Malaysia, Nigeria, United States, India |
| Rykkja | Norway |
| øystein rykkja NO (b. 1910) |
|
|
| helge rykkja Norwegian writer, NO (b. 1943) |
|