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Cognomen Ruaidhri (Ruaidhri
, Ruaidhrí
) , across the world, is a very rare last name. The cognomen Ruaidhri is habitual in Northern Europe, particularly Ireland, where it is a rare surname. Much more prevalently, Ruaidhri is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ruaidhri | Australia, United States, Ireland, United Kingdom, Germany |
| Ruaidhrí | United States, Ireland, United Kingdom |
Smit, Kedney, Devitt, Garvey, Leslie, Fuller, Obrien, Mannion, Mcguire, Mcquade, Sampson, Carmody, Balfour, O'Brien, Mccarthy, Mcgourty, Mckernan, Carvajal, Galligan, Johnston, Finnegan, O'Connor, Boland, Conroy, Mullen, Murphy, Cook, Ball, Bird, Ryan, Dunn, Lyne, Nash, Moran, Carey, Craig, Gallagher, Barra, Brown, Black, Keane, Dixon, Groom, Jacob, Horan, Hogan, Owens, Walsh, Behan, and Henderson