Family name Mujaga (Mujaga 
) , globally, is a very rare cognomen. The surname Mujaga is habitual in Tanzania, where it is a very rare surname, Nigeria, where it is an extremely rare surname, and the United States. Not in comparison with a country's population, this name is the most popular in Tanzania, Nigeria, and India. More prevalently, Mujaga is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mujaga | Tanzania, Nigeria, Bosnia and Herzegovina, United States, India |