Family name Rugagaza (Rugagaza 
) , across the world, is a very rare last name. The cognomen Rugagaza is characteristic of Tanzania, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much less frequently, Rugagaza is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rugagaza | United States, Tanzania |