Cognomen Hailay (Hailay 
) , in the world, is quite a common surname. The last name Hailay is habitual in Ethiopia, where it is quite a rare surname, Saudi Arabia, where it is a rare surname, and Sudan. Very seldom, Hailay is the forename as well as the last name.
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| Hailay | Ethiopia, Saudi Arabia, Sudan, United States, India |
| hailay gesesew researcher |
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| hailay syum researcher (ORCID 0000-0001-9285-2697) |
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| hailay gebretnsae researcher |
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| hailay weldegiorgis berhe researcher (ORCID 0000-0001-8260-8885) |
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| hailay abrha gesesew researcher |
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| hailay gebremedhin researcher |
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| abrha hailay researcher |
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| hermon hailay Ethiopian film director, ET (b. 1985) |
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| kibrom hailay Ethiopian cyclist, ET (b. 1995) |
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