| Cast | |
| Captain James Tiberius Kirk | William Shatner |
| Lieutenant Commander Spock | Leonard Nimoy |
| Lieutenant Commander Montgomery 'Scotty' Scott | James Doohan |
| Lieutenant Hikaru Sulu | George Takei |
| Lieutenant Uhura | Nichelle Nichols |
| Doctor Leonard 'Bones' McCoy | deForest Kelley |
| Ensign pavel Chekov | Walter Koenig |
| nurse Christine Chapel | Majel Barret |
Where No Man Has Gone Before (stardate:1312.4 airdate:22/9/66) - After passing through the barrier at the edge of the galaxy, 2 crew members begin to act strangely. [2nd Pilot]
The Corbomite Maneuver (stardate: 1512.2 airdate:10/11/66) - The Enterprise is threatened by a large craft under the command of Balok, which results in Kirk using unusual tactics
Mudd's Women (stardate:1329.8 airdate: 13/10/66) - Harry Mudd and his beautiful girls cause problems for Captain Kirk.
The Enemy Within (stardate: 1672.1 airdate: 6/10/66) - A transporter malfunction results in 2 captain Kirks - one good, the other evil. [1st time Spock's nerve pinch is seen]
The Man Trap (stardate: 1513.1 airdate: 8/9/66) - The Doctor is reunited with an old flame during a routine visit to M113.
The Naked Time (stardate: 1704.2 airdate: 29/9/66) - The Enterprise crew fall vitim to a mysterious viris which is similar to intoxication
Charlie X (stardate: 1533.6 airdate:15/9/66) - A young passenger, who has trouble dealing with his emotions, threatens the Enterprise
Balance of terror (stardate:1709.2 airdate: 15/12/66)
What Are Little Girls Made Of? (stardate:2712.4 airdate: 20/10/66) - Dr. Korby and his race of androids dream of Conquest, but Kirk has other plans
Dagger Of The Mind (stardate: 2715.1 airdate: 3/11/66) - An escapee from the Tantalus penal colony causes Kirk to investigate
Miri (stardate: 2713.5 airdate: 27/10/66) - The Enterprise discovers a planet of children who don't seem to grow up.
The conscience of the king (stardate: 2817.6 airdate:8/12/66)
The galileo seven (stardate: 2821.5 airdate: 5/1/67)
Court martial (stardate: 2947.3 airdate: 2/2/67) - Kirk is forced to face a Court Martial when one of his crew is killed
The Menagerie (stardates: 3012.4-3013.1 airdates:17/11/66-24/11/66) - Spock kidnaps Captain Pike and undertakes a mission back to Talos IV.
Shore Leave (stardate: 3025.3 airdate: 29/12/66)
The squire of gothos (stardate: 2124.5 airdate: 12/1/67)
Arena (stardate: 3045.6 airdate: 19/1/67) - Kirk is forced to fight a Gorn
The alternative factor (stardate: 3087.6 airdate: 30/3067)
Tomorrow is yesterday (stardate: 3113.2 airdate: 26/1/67)
The return of the archons (stardate: 3156.2 airdate: 9/2/67)
A taste of armageddon (stardate: 3192.1 airdate: 23/2/67)
Space seed (stardate: 3141.9 airdate: 16/2/67) - The discovery of the Botany Bay leads to an attempted take over of the Enterprise by Khan.
This side of paradise (stardate: 3417.3 airdate: 2/3/67)
The devil in the dark (stardate: 3196.1 airdate: 9/3/67)
Errand of mercy (stardate: 3198.4 airdate: 23/3/67)
The city on the edge of forever (airdate: 6/4/67) - Dr McCoy accidently gives himself an overdose and escapes to a planet where he is transported back in time. Kirk and Spock mount a rescue.
Operation - Annihilate! (stardate: 3287.2 airdate: 13/4/67)