Caoimhín Ó Raghallaigh
(born 28 August 1979) is a fiddler, born in Dublin, Ireland, who attended Trinity College Dublin, becoming a scholar in Theoretical Physics (1999) and earning a first-class BA degree (as the top student of his class) in 2001. He is known for developing a drone-based fiddle style heavily influenced by the uilleann pipes and the music of . spent several summers working part- and full-time in the Irish Traditional Music Archives in Dublin, opening up a wealth of old recordings which influenced his repertoire and style. Together with uilleann piper Mick O'Brien, he recorded Kitty Lie Over, named no.1 traditional album of 2003 by Earle Hitchner in American newspaper the Irish Echo. He performs regularly with West Kerry accordion player Brendan Begley, and has collaborated many times with singer . He has also performed with Icelandic group Amiina, and with Sam Amidon, The Waterboys, and others. He is a member of two contemporary traditional music groups: The Gloaming (with Martin Hayes, , Dennis Cahill and Thomas Bartlett); and This Is How We Fly (with Petter Berndalen, Nic Gareiss and Seán Mac Erlaine). He has also worked in theatre, having been commissioned by the Abbey Theatre to write music, and works