Judi Dench as Philomena

Steve Coogan as Martin Sixsmith

Sophie Kennedy Clark as Young Philomena

Mare Winningham as Mary Hess

Barbara Jefford as Sister Hildegarde

Ruth McCabe as Mother Barbara

Peter Hermann as Pete Olsson

Sean Mahon as Michael Hess

Anna Maxwell Martin as Jane

Michelle Fairley as Sally Mitchell

Wunmi Mosaku as Young Nun

Amy McAllister as Sister Anunciata

Charlie Murphy as Kathleen

Cathy Belton as Sister Claire

Kate Fleetwood as Young Sister Hildegarde

Charissa Shearer as Peg

Nika McGuigan as Bridie

Rachel Wilcock as Mamie

Rita Hamill as Nursery Nun

Tadhg Bowen as Young Anthony

Saoirse Bowen as Young Mary

Harrison D'Ampney as Anthony (8-10 Years)

D.J. McGrath as John

Simone Lahbib as Kate Sixsmith

Sara Stewart as Marcia Weller

Gary Lilburn as Priest

Charles Edwards as David

Nicholas Jones as Dr. Robert

Paris Arrowsmith as Bellboy

Marie Jones as Barman's Mum

Frankie McCafferty as Barman

Vaughn Johseph as Receptionist Hotel

George Fisher as Omelette Chef

Jordan King as Waitress

Amber Batty as Marge

Martin Glyn Murray as Father

Florence Keith-Roach as Check In Operator

George Michael Rados as Priest In Church

Elliot Levey as Alex

Timothy Paul Jobe as Doc Hess

Roxanne Gregory as Meg

Jon Wennington as Congregation Member (uncredited)