Throughout the world, Máirín (Mairin 
, Máirín ) is a rare mostly girly, but uncommonly male given name. The first name Máirín is habitual in Ireland, where it is quite a rare girly name, the Dominican Republic, where it is a rare female name, and Australia. In absolute terms, it is commonest in India, the United States, and Ireland. Very seldom, Máirín is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Mairin | Venezuela, Ireland, United States, India, Indonesia |
| Máirín | Ireland, United States |
| máirín beaumont Irish nationalist and teacher (b. 1894) |
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| máirín ní mhuiríosa Irish Gaelic poet, journalist and academic, IE (b. 1906) |
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| máirín uí dhálaigh Wife of the President of Ireland, IE (b. 1908) |
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| máirín lynch Wife of the Taoiseach of Ireland, IE (b. 1916) |
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máirín ní dhonnchadha Irish linguist, IE |
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| máirín o'donovan Irish actress, IE (b. 1936) |
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| máirín quill Irish Progressive Democrats politician, IE (b. 1936) |
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| máirín de búrca Irish writer, journalist and activist (b. 1938) |
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| máirín diamond Irish poet, IE (b. 1957) |
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| máirín nic eoin Irish academic and scholar (b. 1958) |
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| máirín ní ghadhra Irish broadcaster and writer at the Raidió na Gaeltachta, IE |
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| máirín ní rodaigh Irish-speaking teacher, IE |
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| máirín mhic lochlainn Irish radio broadcaster, IE |
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| máirín boland researcher (ORCID 0000-0002-4024-948X) |
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| máirín maccarron |
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Daly, Mccutcheon, O'Donovan, Gallagher, Breathnach, Dhonnchadha, Chonghaile, Gearailt, Donovan, Carroll, Aonghusa, Mcveigh, Mcgrath, Heslin, Harris, Murphy, Nolan, Kelly, Byrne, Burke, Maher, Egan, O'Sullivan, and Kirchheimer