Oscar Isaac
Llewyn Davis

Carey Mulligan
Jean

Justin Timberlake
Jim

Ethan Phillips
Mitch Gorfein

Robin Bartlett
Lillian Gorfein

Max Casella
Pappi Corsicato

Jerry Grayson
Mel Novikoff

Jeanine Serralles
Joy

Adam Driver
Al Cody

Stark Sands
Troy Nelson

John Goodman
Roland Turner

Garrett Hedlund
Johnny Five

Alex Karpovsky
Marty Green

Helen Hong
Janet Fung

Bradley Mott
Joe Flom

Bonnie Rose
Dodi Gamble

Jack O'Connell
Elevator Attendant

Ricardo Cordero
Nunzio

Sylvia Kauders
Ginny

Ian Jarvis
Cromartie

Diane Findlay
Receptionist

Ian Blackman
Studio Man

Steve Routman
Abortion Doctor

Susan Blommaert
Nurse

James Colby
Cop on Road

Charlotte Booker
Chicago Waitress

Mike Houston
Train Station Cop

Sam Haft
Man in Gate of Horn

F. Murray Abraham
Bud Grossman

Frank Ridley
Union Hall Man 1

Jake Ryan
Danny

Declan Bennett
Irish Singer

Daniel Everidge
Additional Irish Singer

Stephen Payne
Mr. Hobby

Roberto Lopez
Bouncer

Marcus Mumford
Mike Timlin (voice) (uncredited)

Leonard Zimmerman
Harried Commuter