All over the world, Breandán (Breandan 
, Breandán , Brénainn) is a rare masculine first name. The first name Breandán is habitual in Ireland, where it is quite a rare male name, the United Kingdom, where it is a very rare masculine name, and the United States, where it is a very rare predominantly masculine, but very infrequently female name. Very seldom, Breandán is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Breandan | United Kingdom, United States, China, Nigeria, Ireland |
| Breandán | United Kingdom, Ireland, United States |
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breandán mac fheorais Irish politician (1918-1990), IE (b. 1918) |
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breandán ó beacháin Irish poet, short story writer, novelist, and playwright (1923-1964), IE (b. 1923) |
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| breandán mac cnáimhsí Irish translator, IE (b. 1921) |
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| breandán ó heithir Irish writer and broadcaster, IE (b. 1930) |
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| breandán ó doibhlin Irish academic, IE (b. 1931) |
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| breandán ó madagáin Irish academic, IE (b. 1932) |
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| breandán ó fionnalaigh Irish hurler, IE (b. 1956) |
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| breandán delap Irish writer, IE (b. 1965) |
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| breandán de gallaí Irish dancer, IE (b. 1969) |
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| breandán ó cíobháin Irish radio broadcaster, IE |
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| breandán anraoi macgabhann researcher |
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| breandán feiritéar Irish radio broadcaster, IE |
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| breandán ó ríordáin archaeologist, IE |
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| breandán 'ac gearailt Irish writer, IE |
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| breandán dé buigléir Irish hurler, IE (b. 1985) |
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