David

Colin Farrell

Short Sighted Woman

Rachel Weisz

Hotel Manager

Olivia Colman

Nosebleed Woman

Jessica Barden

Loner Leader

Léa Seydoux

The Limping Man

Ben Whishaw

Lisping Man

John C. Reilly

Biscuit Woman

Ashley Jensen

Loner Swimmer

Michael Smiley

The Maid

Ariane Labed

Heartless Woman

Angeliki Papoulia

Doctor

Roger Ashton-Griffiths

Nosebleed Woman's Best Friend

Emma O'Shea

David's wife

Rosanna Hoult

Trainer Waiter - Shooting Range

Ewen MacIntosh

70 Year Old Waiter

Anthony Dougall

Donkey Shooter

Jacqueline Abrahams

30 Year Old Waiter

Anthony Moriarty

Guard Waiter

Sean Duggan

Loner Leader's Father

Roland Ferrandi

Loner Leader's Mother

Imelda Nagle Ryan

Campari Man

Patrick Malone

Police Officer 2

Kevin McCormack

Hotel Manager's Partner

Garry Mountaine

Bald Man

James Finnegan

Guest Room 104

Judi King Murphy

Restaurant Waiter

Robert Heaney

New Daughter

Laoise Murphy

Police Officer 1

Kathy Kelly

Hotel Receptionist

Nancy Onu

Arrested Town Woman

Sandra Hayden Mason

Bandaged Loner

Ishmael Moalosi

Trapped Loner

Matthew O'Brien

Coach Driver Waiter

Chris Threader

Piano Player (uncredited)

Cian Boylan

Waiter (uncredited)

Degnan Geraghty

Hotel Guest (uncredited)

Stephen Ryan