Ryan Gosling
as Sebastian

Emma Stone
as Mia

John Legend
as Keith

Rosemarie DeWitt
as Laura

J.K. Simmons
as Bill

Amiée Conn
as Famous Actress

Terry Walters
as Linda

Thom Shelton
as Coffee Spiller

Cinda Adams
as Casting Director

Callie Hernandez
as Tracy

Jessica Rothe
as Alexis

Sonoya Mizuno
as Caitlin

Claudine Claudio
as Karen

Jason Fuchs
as Carlo

D.A. Wallach
as 80's singer

Trevor Lissauer
as Valet

Olivia Hamilton
as Bree

Anna Chazelle
as Sarah / Hula Hooper

Marius de Vries
as Clyde

Finn Wittrock
as Greg Earnest

Josh Pence
as Josh

Nicole Coulon
as Josh's Fiance

Damon Gupton
as Harry

Christopher Michael Stevens
as Malcolm

Keith Harris
as Cole

Kaveh Rastegar
as Tom

David Douglas
as Ty

Miles Anderson
as Alistair

Bobo Chang
as Photographer's Assistant

Meagen Fay
as Mrs. Dolan

John Hindman
as Frank

Valarie Rae Miller
as Amy Brandt

Nicole Wolf
as Amy Brandt's Assistant

Corrin Evans
as New Barista

Kiff VandenHeuvel
as New Coffee Shop Manager

Tom Everett Scott
as David

Hemky Madera
as Jimmy

Zoë Hall
as Chelsea

Dempsey Pappion
as Charles

Clifton 'Fou Fou' Eddie
as Seb's Drummer

Cal Bennett
as Seb's Sax Player

Nedra Wheeler
as Seb's Bassist

Javier Gonzalez
as Seb's Trumpeter

Khirye Tyler
as Seb's Pianst

Briana Lee
as Echo Backup Singer

Shaylah J. Stevens
as Echo Backup Singer

Natalie Imani
as Echo Backup Singer

Camryn Ray Cavaliero
as Mia's Daughter

Sandra Rosko
as Dream Audience

Arthur Horowitz
as Fantasy Baby

Reshma Gajjar
as Traffic Dancer - Girl #1

Candice Coke
as Traffic Dancer - Girl #2

Hunter Hamilton
as Traffic Dancer - 1st Man

Damian Gomez
as Traffic Dancer - 2nd Man

Amanda Balen
as Traffic Dancer - Conductor

Lou Becker
as Traffic Dancer

Dominic Chaiduang
as Traffic Dancer

Cindera Che
as Traffic Dancer

Chris Moss
as Traffic Dancer

Marissa Labog
as Traffic Dancer

Tiffany Daniels
as Traffic Dancer

Melinda Sullivan
as Traffic Dancer

Stephanie Landwehr
as Traffic Dancer

Britt Stewart
as Traffic Dancer

Clarice Ordaz
as Traffic Dancer

Nathan Prevost
as Traffic Dancer

Mecca Vazie Andrews
as Traffic Dancer

Scott Hislop
as Hollywood Party Dancer - Creepy Guy

KC Monnie
as Hollywood Party Dancer

Krystal Ellsworth
as Hollywood Party Dancer

Sarah Mitchell
as Hollywood Party Dancer

Khasan Brailsford
as Hollywood Party Dancer

Morgan Larson
as Hollywood Party Dancer

Becca Sweitzer
as Restaurant Dancer

Gakenia Muigai
as Restaurant Dancer

Michael Stein
as Restaurant Dancer

Mario Diaz
as Restaurant Dancer

Julie Schmid
as Epilogue Dancer

Samantha Abrantes
as Epilogue Dancer

Lexie Contursi
as Epilogue Dancer

Eartha Robinson
as Epilogue Dancer

Sybil Azur
as Epilogue Dancer

Tara Nicole Hughes
as Epilogue Dancer

Kayla Kalbfleisch
as Epilogue Dancer

Martha Nichols
as Epilogue Dancer

Anthony Marciona
as Epilogue Dancer

Bill Prudich
as Epilogue Dancer

Robert Roldan
as Epilogue Dancer

Ryan Novak
as Epilogue Dancer

Demian Boergadine
as Epilogue Dancer

Gustavo Vargas
as Epilogue Dancer

Robert Haynes
as Angry Neighbor

Doran Butler
as Traffic Dancer

Matt Cady
as Traffic Dancer

Carol Connors
as Traffic Dancer

Patrick Cook
as Traffic Dancer

Aaron 'Deuce' Cooke
as Traffic Dancer

Bubba Dean Rambo
as Traffic Dancer

Nick Drago
as Traffic Dancer

Shaun Evaristo
as Traffic Dancer

Dana Fukagawa
as Traffic Dancer

Daniel Gaymon
as Traffic Dancer

Liz Imperio
as Traffic Dancer

Casey Johansen
as Traffic Dancer

Cris Judd
as Traffic Dancer

Yoori Kim
as Traffic Dancer

Bradley M. Rapier
as Traffic Dancer

Dana Wilson
as Traffic Dancer

Terrance Yates
as Traffic Dancer

Tracy Shibata
as Hollywood Party Dancer - Girl #1

Dominique Domingo
as Hollywood Party Dancer - Girl #2

Asiel Hardison
as Hollywood Party Dancer - Agent #1

Corey Anderson
as Hollywood Party Dancer - Agent #2

Nick Baga
as Hollywood Party Dancer - Agent #3

Leah Adler
as Hollywood Party Dancer

Noel Bajandas
as Hollywood Party Dancer

Denzel Chisolm
as Hollywood Party Dancer

Montana Efaw
as Hollywood Party Dancer

Natalie Gilmore
as Hollywood Party Dancer

Shannon Holtzapffel
as Hollywood Party Dancer

Galen Hooks
as Hollywood Party Dancer

Jeremy Hudson
as Hollywood Party Dancer

George Lawrence Jr.
as Hollywood Party Dancer

Scott Myrick
as Hollywood Party Dancer

Cassidy Noblett
as Hollywood Party Dancer

Brittany Parks
as Hollywood Party Dancer

Víctor Rojas
as Hollywood Party Dancer

Tony Bellissimo
as Echo Dancer

Ryan Ramirez
as Echo Dancer

Catalina Cat Rendic
as Echo Dancer

Bryan Tanaka
as Echo Dancer

Ava Bernstine-Mitchell
as Restaurant Dancer

Quinn Lipton
as Restaurant Dancer

Monie Adamson
as Epilogue Dancer

Matthew Aylward
as Epilogue Dancer

McKenzie Anderson
as Epilogue Dancer

Pamela Chu
as Epilogue Dancer

Mallauri Esquibel
as Epilogue Dancer

Michael Higgins
as Epilogue Dancer

Chris Jarosz
as Epilogue Dancer

Matthew Kazmierczak
as Epilogue Dancer

Paul Kirkland
as Epilogue Dancer

Megan Lawson
as Epilogue Dancer

Michael Munday
as Epilogue Dancer

Brandon O'Neal
as Epilogue Dancer

Chelsea Thedinga
as Epilogue Dancer

Danny Valle
as Epilogue Dancer

Emily Williams
as Epilogue Dancer

Tommy Cooley
as Kissing Couple (uncredited)

Kristin Slaysman
as Coffee Shop Customer (uncredited)

Ana Flavia Gavlak
as Young Actress (uncredited)

Noah James
as Young Man (uncredited)

Ottavio Taddei
as Swing Dancer (uncredited)

Destinee Handly
as Barista (uncredited)

Steffen Dziczek
as Moviegoer (uncredited)

Vince Donvito
as Coffee Guy (uncredited)

Patty Tobin
as Casting Director (uncredited)

Crystal Nichol
as Audition Actress (uncredited)

Kaye L. Morris
as Producer's Girlfriend (uncredited)

Trent Kerpsack
as Sailor (uncredited)

Holly Houk
as Kissing Couple (uncredited)

Andrea Lareo
as Casting Assistant (uncredited)

April Martucci
as Audition Girl (uncredited)

Heather Turman
as Young Man's Date (uncredited)

Jenna Curtis
as Waitress (uncredited)

Jordan Ray Fox
as Nathan (uncredited)

Anna Lunberry
as Publicist (uncredited)

Christopher Aber
as Cowboy (uncredited)

Margaret Newborn
as Jazz Club Goer (uncredited)

C.J. Stussi
as Espresso Coffee Shop Customer (uncredited)

Cameron Brinkman
as Jazz Club Patron (uncredited)

Kristin Elliott
as Audition Actress (uncredited)

Lynn Moore
as Jazz Club Patron (uncredited)

Nilla Elizabeth Watkins
as Coffee Shop Customer (uncredited)

Andres Perez-Molina
as Coffee Shop Customer (uncredited)

Shannon Leann
as Hollywood Starlet (uncredited)

Milica Govich
as Coffee Shop Customer #2 (uncredited)

Frederick Keeve
as Restaurant Patron (uncredited)

Amanda Fields
as Red Head Actress (uncredited)