Colin Farrell as Pádraic Súilleabháin

Brendan Gleeson as Colm Doherty

Kerry Condon as Siobhán Súilleabháin

Barry Keoghan as Dominic Kearney

Gary Lydon as Peadar Kearney

Pat Shortt as Jonjo Devine

Sheila Flitton as Mrs. McCormick

Bríd Ní Neachtain as Mrs. O'Riordan

Jon Kenny as Gerry

Aaron Monaghan as Declan

David Pearse as Priest

John Carty as Older Musician 1

Oliver Farrelly as Older Musician 2

Lasairfhíona Ní Chonaola as Female Singer

James Carty as Student Musician 1

Conor Connolly as Student Musician 2

Ryan Owens as Student Musician 3