Emily Blunt (Rosemary), Jamie Dornan (Anthony), Jon Hamm (Adam), Christopher Walken (Tony Reilly), Dearbhla Molloy (Aoife Muldoon), Danielle Ryan (Maeve), Barry McGovern (Cleary) more..., Don Wycherley (Chris Muldoon), Clare Barrett (Mary Reilly), Darragh O'Kane (Young Anthony), Abigail Coburn (Young Rosemary), Anna Weekes (Fiona), Lydia McGuinness (Eleanor), Tony Reidy (Pub Band), Des Cafferty (Pub Band), Dan Delany (Pub Band), Michael McCormack (Owen The Townsman), Jon Tenney (Pub MC), Tommy O'Neill (Uncle Frank), Rosemary Muldoon (Woman at Picnic), Paige Bestington (Ballerina), Martin F Ward (Self - Flight Attendant (uncredited)), Joseph Palmer (First Class Passenger)

Anthony Bregman (Producer), Stephen Goldblatt (Director of Photography), Anna Rackard (Production Design), Amelia Warner (Music), John Patrick Shanley (Screenplay), John Patrick Shanley (Theatre Play), Eileen Buggy (Hair Designer) more..., Niamh O'Loan (Makeup Designer), Martina Niland (Producer), Leslie Urdang (Producer), Michelle Johnson (Hairstylist), Bradley Gallo (Producer), Evelyne Noraz (Makeup Artist), Stacey Butterworth (Wig Designer), Andy Watson (Art Direction), Keri Lederman (Set Decoration), Judith Hynes (Standby Art Director), Ian Blume (Editor), Michael Helfant (Producer), Alex Witchel (Producer), Triona Lillis (Costume Design), Jared Grove (Boom Operator), Jeanne McCarthy (Casting), Karen L. Thorson (Post Production Supervisor), Karen L. Thorson (Co-Producer), Robert Salerno (Unit Production Manager), Zygi Kamasa (Executive Producer), Robert Flanagan (Sound Mixer), Ron Bochar (Sound Designer), Ron Bochar (Sound Re-Recording Mixer), Nicholas Renbeck (Sound Effects Editor), Jared Underwood (Executive Producer), Michelle Johnson (Hair Designer), Louise Kiely (Casting), Kasia Walicka Maimone (Costume Design), Evelyne Noraz (Makeup Designer), Joe Condren (Stunt Coordinator), Luke DiTommaso (Visual Effects Supervisor), Andrew C. Robinson (Executive Producer), Melina Greene (Second Second Assistant Director) and others.