William Shatner as Kirk

Leonard Nimoy as Spock

DeForest Kelley as McCoy

James Doohan as Scotty

George Takei as Sulu

Walter Koenig as Chekov

Nichelle Nichols as Uhura

Mark Lenard as Sarek

Jane Wyatt as Amanda

Majel Barrett as Commander Chapel

Robert Ellenstein as Federation Council President

John Schuck as Klingon Ambassador

Brock Peters as Admiral Cartwright

Robin Curtis as Lt. Saavik

Catherine Hicks as Gillian

Michael Snyder as Starfleet Communications Officer

Michael Berryman as Starfleet Display Officer

Mike Brislane as Saratoga Science Officer

Grace Lee Whitney as Commander Rand

Jane Wiedlin as Alien Communications Officer

Vijay Amritraj as Starship Captain

Nick Ramus as Saratoga Helmsman

Thaddeus Golas as Controller #1

Marty Pistone as Controller #2

Scott Devenney as Bob Briggs

Viola Kates Stimpson as Lady in Tour

Phil Rubenstein as 1st Garbageman

John Miranda as 2nd Garbageman

Joe Knowland as Antique Store Owner

Bob Sarlatte as Waiter

Everett Lee as Cafe Owner

Richard Harder as Joe

Alex Henteloff as Nichols

Tony Edwards as Pilot

Eve Smith as Elderly Patient

Tom Mustin as Intern #1

Greg Karas as Intern #2

Raymond Singer as Young Doctor

David Ellenstein as Doctor #1

Judy Levitt as Doctor #2

Teresa E. Victor as Usher

James Menges as Jogger

Kirk R. Thatcher as Punk on Bus

Jeff Lester as FBI Agent

Joe Lando as Shore Patrolman

Newell Tarrant as CDO

Mike Timoney as Electronic Technician

Jeff Martin as Electronic Technician

Joseph Naradzay as Marine Sargent

Donald W. Zautcke as Marine Lieutenant

Monique DeSart as Madelaine (uncredited)

Madge Sinclair as Saratoga Captain (uncredited)

Kimberly L. Ryusaki as Tourist (uncredited)

Philip Weyland as Tourist (uncredited)