William Shatner

Admiral James T. Kirk

Leonard Nimoy

Captain Spock

Ricardo Montalban

Khan Noonien Singh

DeForest Kelley

Dr. Leonard 'Bones' McCoy

James Doohan

Cmdr. Montgomery 'Scotty' Scott

Walter Koenig

Cmdr. Pavel Chekov

George Takei

Cmdr. Hikaru Sulu

Nichelle Nichols

Cmdr. Uhura

Bibi Besch

Dr. Carol Marcus

Merritt Butrick

Dr. David Marcus

Paul Winfield

Captain Clark Terrell

Kirstie Alley

Lt. Saavik

Judson Scott

Joachim

Ike Eisenmann

Preston

John Vargas

Jedda

John Winston

Kyle

Paul Kent

Beach

Nicholas Guest

Cadet

Russell Takaki

Madison

Kevin Rodney Sullivan

March

Joel Marston

Crew Chief

Laura Banks

Khan's Navigator

Steve Bond

Khan's Crewman #1

Brett Baxter Clark

Khan's Crewman #2

Gilbert B. Combs

Enterprise Engineer

James Horner

Enterprise Crewman

George Sasaki

Crewmember at Spock's Funeral (uncredited)

Teresa E. Victor

Bridge Voice

Dianne Harper

Radio Voice

David Ruprecht

Radio Voice (credited as David Ruprecht)

Marcy Vosburgh

Computer Voice

Bill Baker

Enterprise Trainee (uncredited)

Steve Blalock

Trainee Crewmember (uncredited)

Fletcher Bryant

Khan's Crewman (uncredited)

Bobby Burns

Crew Member at Spock's Funeral (uncredited)

Diane Carter

Regula I Scientist (uncredited)

Ann Chatterton

Khan Crew Member (uncredited)

Tim Culbertson

Khan's Henchman (uncredited)

Eddy Donno

Corpse of Regula I Cook (uncredited)

John Gibson

Khan's Crewman #4 (uncredited)