Cognomen Rahi-Tamm (Rahi-Tamm 
) , globally, is an extremely rare last name. The surname Rahi-Tamm is characteristic of Northern Europe, particularly Estonia, where it is a rare surname. Parts of the name also exists independently as a last name Rahi, and a last name Tamm.
| VARIANT | COUNTRY |
|---|---|
| Rahi-Tamm | Estonia |
| aigi rahi-tamm Estonian historian, EE (b. 1965) |
|