William Shatner

Character: Admiral James T. Kirk

Leonard Nimoy

Character: Captain Spock

Ricardo Montalban

Character: Khan Noonien Singh

DeForest Kelley

Character: Dr. Leonard 'Bones' McCoy

James Doohan

Character: Cmdr. Montgomery 'Scotty' Scott

Walter Koenig

Character: Cmdr. Pavel Chekov

George Takei

Character: Cmdr. Hikaru Sulu

Nichelle Nichols

Character: Cmdr. Uhura

Bibi Besch

Character: Dr. Carol Marcus

Merritt Butrick

Character: Dr. David Marcus

Paul Winfield

Character: Captain Clark Terrell

Kirstie Alley

Character: Lt. Saavik

Judson Scott

Character: Joachim

Ike Eisenmann

Character: Preston

John Vargas

Character: Jedda

John Winston

Character: Kyle

Paul Kent

Character: Beach

Nicholas Guest

Character: Cadet

Russell Takaki

Character: Madison

Kevin Rodney Sullivan

Character: March

Joel Marston

Character: Crew Chief

Laura Banks

Character: Khan's Navigator

Steve Bond

Character: Khan's Crewman #1

Brett Baxter Clark

Character: Khan's Crewman #2

Gilbert B. Combs

Character: Enterprise Engineer

James Horner

Character: Enterprise Crewman

George Sasaki

Character: Crewmember at Spock's Funeral (uncredited)