List of Famous people named Ruaidhri

Rúaidhrí de Valera was an Irish archaeologist most known for his work on the megalithic tombs of his country. He was the son of Éamon de Valera and Sinéad de Valera.

Ruaidhrí Mac Ruaidhrí was a fourteenth-century Scottish magnate and chief of Clann Ruaidhrí. He was an illegitimate son of Ailéan mac Ruaidhrí, and is recorded to have participated in the kindred's military actions against supporters of both the English Crown and Scottish Crown. Following the apparent death of his brother, Lachlann, Ruaidhrí appears to have taken control of the kindred, and firmly aligned the family with Robert I, King of Scotland. Ruaidhrí may well be the member of Clann Ruaidhrí who is recorded slain at the Battle of Faughart in support of the Bruce cause in Ireland. After his death, Ruaidhrí's half-sister, Cairistíona, attempted to transfer the Clann Ruaidhrí territories outwith the family. Ruaidhrí was survived by a daughter, Áine, and an illegitimate son, Raghnall. The latter fended off Cairistíona's actions and succeeded to the chiefship of Clann Ruaidhrí.

Rúaidhrí Conroy is an Irish actor. He is the son of actor Brendan Conroy. One of his first castings was as Tito in the film Into the West, for which he won a Young Artist Award in the Outstanding Youth Actors in a Family Foreign Film category. In 1998, Conroy received the Theatre World Award for his performance in Martin McDonagh's play, The Cripple of Inishmaan.

Ruaidhrí mac Raghnaill was a leading figure in the Kingdom of the Isles and a member of Clann Somhairle. He was a son of Raghnall mac Somhairle, and was the eponymous ancestor of Clann Ruaidhrí. Ruaidhrí may have become the principal member of Clann Somhairle following the annihilation of Aonghus mac Somhairle in 1210. At about this time, Ruaidhrí seems to have overseen a marital alliance with the reigning representative of the Crovan dynasty, Rǫgnvaldr Guðrøðarson, King of the Isles, and to have contributed to a reunification of the Kingdom of the Isles between Clann Somhairle and the Crovan dynasty.