Cognomen Rättö (Rättö 
) , throughout the world, is a very rare family name. The surname Rättö is habitual in Northern Europe, particularly Finland, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Rättö | Finland |
|
vilho rättö Finnish soldier, FI (b. 1913) |
|
|
mika rättö FI (b. 1973) |
|
| joosua rättö Finnish pesäpallo player, FI |
|
Ari, Lauri, Lassi, Janne, Jenni, Tarja, Tommi, Hanna, Roope, Hannu, Matias, Samuli, Akseli, Philip, Janika, Joosua, Charlie, Ville, Roosa, Ronja, Peter, Jan, Mika, Sami, Anna, Anne, Kati, Piia, Juho, Timo, Timi, Emma, Olli, Outi, Maria, Marko, Sonja, Antti, Kirsikka, and Aleksander