DeForest Kelley
as Commander Leonard H. McCoy, M.D.
James Doohan
as Commander Montgomery Scott
Walter Koenig
as Commander Pavel Andreievich Chekov
George Takei
as Commander Hikaru Sulu
Nichelle Nichols
as Commander Nyota Uhura
Ricardo Montalban
as Khan Noonien Singh
Kirstie Alley
as Lieutenant Saavik
Bibi Besch
as Dr. Carol Marcus
Merritt Butrick
as Dr. David Marcus