Surname Cheallaigh (Cheallaigh 
) , all around the world, is a rare cognomen. The cognomen Cheallaigh is habitual in Ireland, where it is quite a rare surname, the United Kingdom, where it is a very rare surname, and Canada, where it is an extremely rare surname. Much less frequently, Cheallaigh is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Cheallaigh | Canada, France, United States, Ireland, United Kingdom |
| laoise ní cheallaigh Irish singer, IE (b. 1977) |
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| aisling ní cheallaigh researcher |
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| máire treasa ní cheallaigh Irish television presenter, Student doctor, IE |
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| clíona ní cheallaigh researcher |
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| sadhbh ní cheallaigh researcher (ORCID 0000-0001-6174-0019) |
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