Globally, Oisín (Oisin 
, Oisín 
) is quite a rare male given name. The given name Oisín is habitual in Ireland, where it is quite a common masculine name, Albania, where it is a rare male name, and the United Kingdom. Not in comparison with a country's population, this name is the most popular in Ireland, the United Kingdom, and China. Very seldom, Oisín is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Oisin | Australia, Ireland, United Kingdom, United States, China |
| Oisín | Australia, Canada, Ireland, United Kingdom, United States |
| oisín mac diarmada Irish fiddler (born 1978), IE (b. 1978) |
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| oisín ó muirthile translator |
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| oisín bugter researcher |
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| oisín callery researcher |
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| oisín f sweeney researcher (ORCID 0000-0002-8674-2333) |
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| oisín conaty researcher |
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| oisín conor john duncan candidate in the 2021 Scottish Parliament election |
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| oisín wall researcher |
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| oisín mac IE |
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| oisín kiernan cavan Gaelic footballer (b. 1992) |
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| oisín mullin |
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Ryan, Murphy, Mchugh, Boland, Browne, Butler, Bugter, Keniry, Devlin, Dillon, Little, Thomas, Hassan, Hughes, Mulhall, Collins, Brennan, O'Brien, O'Neill, Connolly, O'Reilly, Gallagher, Murray, Mooney, Morrin, Quinn, Daly, Hunt, Fahy, Ward, Moule, Smith, Cooke, Craig, Brady, Burke, O'Driscoll, Byrne, Doyle, Dunne, Gough, Joyce, Nolan, Hogan, Hides, Flynn, Walsh, Woods, Kelly, and O'Sullivan