Cognomen Ratukalou (Ratukalou 
) , across the world, is a rare last name. The surname Ratukalou is habitual in Fiji, where it is quite a common surname, the United Kingdom, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ratukalou | United Kingdom, Fiji, United States |