Family name Duinn (Duinn 
) , across the world, is a very rare cognomen. The last name Duinn is characteristic of Northern Europe, particularly Ireland, where it is a rare surname. Very seldom, Duinn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Duinn | United States, Ireland |
| gilla na naemh ua duinn Historian and poet (b. 1102) |
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| proinnsías ó duinn (b. 1941) |
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| seán ó duinn VIAF[164657634] LCAuth[n85044287] |
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| proinsias ó duinn Irish radio broadcaster, IE |
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