Family name Rainar (Rainar 
) , globally, is a very rare last name. The surname Rainar is habitual in Venezuela, where it is a very rare surname, Spain, where it is an extremely rare surname, and Malaysia. Measured by absolute frequency, it is the most numerous in India, the United States, and Venezuela. Likewise, Rainar is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rainar | Estonia, Philippines, Brazil, United States, India |