Family name Mengstu (Mengstu 
) , across the world, is quite a common cognomen. The surname Mengstu is characteristic of Ethiopia, where it is quite a rare surname, Sudan, and Saudi Arabia, where it is a rare surname. Likewise, Mengstu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mengstu | Saudi Arabia, Sudan, Ethiopia, United Arab Emirates, Lebanon |
|
asefa mengstu Ethiopian long-distance runner, ET (b. 1985) |
|