Last name Tlahun (Tlahun 
) , all over the world, is quite a rare cognomen. The cognomen Tlahun is habitual in Ethiopia, where it is a rare surname, Sudan, and Saudi Arabia. Also, Tlahun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tlahun | Ethiopia, United States, Sudan, Saudi Arabia |