Family name Demelash (Demelash 
) , across the world, is a common surname. The cognomen Demelash is habitual in Ethiopia, where it is quite a common surname, Sudan, where it is a rare surname, and Switzerland. Not in comparison with a country's population, this name is the most popular in Ethiopia, Sudan, and Saudi Arabia. Also, Demelash is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Demelash | Ethiopia, Saudi Arabia, Sudan, Switzerland, United States |
|
yigrem demelash Ethiopian long-distance runner, ET (b. 1994) |
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| habtamu demelash researcher (ORCID 0000-0002-9381-2184) |
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| yoseph demelash researcher (ORCID 0000-0002-9141-3788) |
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