Ana de Armas as Norma Jeane / Marilyn Monroe

Adrien Brody as The Playwright

Bobby Cannavale as The Ex-Athlete

Sara Paxton as Miss Flynn

Lucy DeVito as Ex-Athlete's Niece

Julianne Nicholson as Gladys

Scoot McNairy as Tommy Ewell / Richard Sherman

Xavier Samuel as Cass Chaplin

Caspar Phillipson as The President

Evan Williams as Eddy G. Robinson Jr.

Rebecca Wisocky as Yvet

Toby Huss as Whitey

Catherine Dent as Jean

Haley Webb as Brooke (Flight Attendant)

Dan Butler as I.E. Shinn

Tygh Runyan as Norma Jeane's Father

David Warshofsky as Mr. Z

Michael Masini as Tony Curtis / Josephine

Chris Lemmon as Jack Lemmon / Daphne

Ned Bellamy as Doc Fell

Sonny Valicenti as Casting Director

Tatum Shank as Dick Tracy

Andrew Thacher as Jiggs

Dominic Leeder as Bugs Bunny

Skip Pipo as Dr. Bender

Ravil Isyanov as Billy Wilder

Tim Ransom as Rudy

Rob Brownstein as Acting Coach

Rob Nagle as Radio Announcer

Ethan Cohn as Assistant to the Director

Mike Ostroski as The Writer

Christopher Kriesa as Joe E. Brown

Eric Matheny as Joseph Cotten

Kiva Jump as Ward Nurse at Norwalk

Patrick Brennan as Joe (Photo Shoot Photographer)

Ryan Vincent as Uncle Clive

Vanessa Lemonides as Marilyn Singing Voice (voice)

Michael Drayer as Deputy Will Bonnie

Claudia Smith as Dee-Dee

Mary-Pat Green as Tracey

Ron West as Dr. Spindel (Abortion Doctor)

Flynn Platt as Actor in Play

Scott Wilder as Chloroform Man #1

Sal Landi as Chloroform Man #2

Seth Meriwether as 5th Helena Messenger

Darrin M. Schlie as Assistant Camera Man

Julián Rebolledo as Trailer Announcer / Newsreel Announcer

Allan Havey as Dr. Greenson

Tereza Rizzardi as Ex-Athlete's Momma

Lily Fisher as Young Norma Jeane

Spencer Taylor as Assistant Director

Denna Thomsen as Choreographer

Parker Harris as Diamonds Dancer

Ryan Kanfer as Diamonds Dancer

Scott Hislop as Diamonds Dancer

Parker Blakely as Diamonds Dancer

Chris Moss as Diamonds Dancer

Cris Cangero as Diamonds Dancer

Brandon Beltran as Diamonds Dancer

Patrick Ellis as Diamonds Dancer

Luke Kamppila as Diamonds Dancer

Richard Biglia as Diamonds Dancer

Arne Gjelten as Diamonds Dancer

Russell Ridgeway as Diamonds Dancer

Jake Brandorff as Diamonds Dancer

Bryan Anthony as Diamonds Dancer

Jeremy Shouldis as Tuxedo #2 (uncredited)

Steve Bannos as Brentwood Doctor (uncredited)

Dieterich Gray as Photographer's Assistant (uncredited)

Mia McGovern Zaini as Young Norma Jeane (voice) (uncredited)

Garret Dillahunt as Producer (uncredited)

Eden Riegel as Esther (uncredited)

Judy Kain as Severe Woman (uncredited)