Sean Penn as Harvey Milk

Emile Hirsch as Cleve Jones

Josh Brolin as Dan White

Diego Luna as Jack Lira

James Franco as Scott Smith

Alison Pill as Anne Kronenberg

Victor Garber as Mayor Moscone

Denis O'Hare as John Briggs

Joseph Cross as Dick Pabich

Stephen Spinella as Rick Stokes

Boyd Holbrook as Denton Smith

Lucas Grabeel as Danny Nicoletta

Jeff Koons as Art Agnos

Brent Corrigan as Telephone Tree #3

Dave Franco as Telephone Tree #5

Elias McConnell as Telephone Tree #8

Ashlee Temple as Dianne Feinstein

Brandon Boyce as Jim Rivaldo

Kelvin Yu as Michael Wong

Cleve Jones as Don Amador

Dustin Lance Black as Castro Clone

Joshua Grannell as Peaches Christ

Blake Cooper Griffin as Castro Man

Tim Halpin as SFPD Motor Cop

Richard Gross as Riot Cop

Drew Kuhse as Pizza Delivery Man

Catherine Cook as Opera Performer - Tosca

Joe Meyers as Opera Performer - Spoletta

Ryan Hellquist as Law Student (uncredited)

Anita Bryant as Self (archive footage)

Walter Cronkite as Self (archive footage)

Ronald Reagan as Self (archive footage)

Harvey Milk as Self (archive footage)

Dan White as Self (archive footage)

Howard Rosenman as David Goodstein

Lynn McRee as Moscone's Secretary

Jerry Brown as Self (archive footage)

Frank M. Robinson as Frank Robinson

Ted Jan Roberts as Dennis Peron