Michael Fassbender

Frank

Domhnall Gleeson

Jon Burroughs

Maggie Gyllenhaal

Clara

Scoot McNairy

Don

François Civil

Baraque

Carla Azar

Nana

Tess Harper

Frank's Mom

Bruce McIntosh

Frank's Dad

Hayley Derryberry

Simone

Lauren Poole

Alice

Moira Brooker

Jon's Mother

Paul Butterworth

Jon's Father

Phil Kingston

Radio DJ

Billie Traynor

Café Lady

Shane O'Brien

Lucas

Chris McHallem

Paramedic

Michael James Ford

Port Official

Mark Huberman

Management Guru

Rosalind Adler

German Mother

Niall Glennon

German Father

Torsten Brescanu

German Child

Leroy Harris

Grocery Boy

Noah Hauser

Passerby Austin 1

Laura Love Tode

Passerby Austin 2

Jordyn Aurora Aquino

Hipster Singer

Katie Anne Mitchell

Interview Girl

Paul Howard Smith

Man in Cowboy Hat

Matthew Page

Passerby in Alleyway

Alex Knight

SXSW Driver

Abe Bueno-Jallad

Stage Manager

Morse Bicknell

Driver

Dean Satriano

Young Man in Chinese Restaurant

Peter Trinh

Chinese Restaurant Waiter

Kevin Wiggins

Hillbilly

Travis Hammer

Tree Surgeon

Kelly V. Lucio

SXSW Concert Attendee (uncredited)