Surname Rainesalo (Rainesalo 
) , across the world, is a very rare last name. The family name Rainesalo is habitual in Finland, where it is a rare surname, the United States, where it is an extremely rare surname, and Brazil.
| VARIANT | COUNTRY |
|---|---|
| Rainesalo | Brazil, Finland, United States |
| aarne rainesalo Finnish geodesist, FI (b. 1892) |
|