William Shatner

Character: Kirk

Leonard Nimoy

Character: Spock

DeForest Kelley

Character: McCoy

James Doohan

Character: Scotty

Walter Koenig

Character: Chekov

Nichelle Nichols

Character: Uhuru

George Takei

Character: Sulu

Mark Lenard

Character: Sarek

David Warner

Character: Chancellor Gorkon

Kim Cattrall

Character: Lt. Valeris

Rosanna DeSoto

Character: Azetbur

Christopher Plummer

Character: Chang

Kurtwood Smith

Character: Federation President

Brock Peters

Character: Admiral Cartwright

Paul Rossilli

Character: Kerla

John Schuck

Character: Klingon Ambassador

Iman

Character: Martia

Leon Russom

Character: Chief In Command

Michael Dorn

Character: Klingon Defense Attorney

Grace Lee Whitney

Character: Excelsior Communications Officer

Robert Easton

Character: Klingon Judge

Clifford Shegog

Character: Klingon Officer

William Morgan Sheppard

Character: Klingon Commander

Brett Porter

Character: General Stex

Jeremy Roberts

Character: Excelsior Officer

Michael Bofshever

Character: Excelsior Engineer

Angelo Tiffe

Character: Excelsior Navigator

Boris Lee Krutonog

Character: Helmsman Lojur

Christian Slater

Character: Excelsior Communications Officer

Tom Morga

Character: The Brute

Todd Bryant

Character: Klingon Translator

John Bloom

Character: Behemoth Alien

Jim Boeke

Character: First Klingon General

Carlos Augusto Cestero

Character: Munitions Man

Edward Clements

Character: Young Crewman

Katie Johnston

Character: Martia as a Child

Doug Engalla

Character: Prisoner at Rura Penthe

Matthias Hues

Character: Second Klingon General

Darryl Henriques

Character: Nanclus

David Orange

Character: Sleepy Klingon

Judy Levitt

Character: Military Aide

Shakti Chen

Character: ADC

Michael Snyder

Character: Crewman Dax

René Auberjonois

Character: Colonel West (uncredited)

Denise Lynne Roberts

Character: Enterprise-A Crewmember (uncredited)