What are the best episodes of Star Trek?

The best rated episodes of Star Trek are: Yesteryear - S1E2 rated 7.7, More Tribbles, More Troubles - S1E5 rated 7.2, Albatross - S2E4 rated 7.1, The Counter-Clock Incident - S2E6 rated 7.0, The Terratin Incident - S1E11 rated 6.9, The Eye of the Beholder - S1E15 rated 6.9, The Survivor - S1E6 rated 6.9

What are the worst episodes of Star Trek?

The lowest rated episodes of Star Trek are: The Jihad - S1E16 rated 6.3, How Sharper Than a Serpent's Tooth - S2E5 rated 6.3, The Magicks of Megas-tu - S1E8 rated 6.4, The Ambergris Element - S1E13 rated 6.5, Mudd's Passion - S1E10 rated 6.6, The Pirates of Orion - S2E1 rated 6.6, The Practical Joker - S2E3 rated 6.7

Star Trek Episode Rating Graph

Sep 1973 - Oct 1974

6.6

Star Trek Episode Rating Chart

Terrible

	E1	E2	E3	E4	E5	E6	E7	E8	E9	E10	E11	E12	E13	E14	E15	E16
S1
S2

Browse episode ratings trends for Star Trek. Simply click on the interactive rating graph to explore the best and worst of Star Trek's 22 episodes.

Best Episodes of Star Trek

Yesteryear
S1 Ep2
7.7
15th Sep 1973
Stardate: 5373.4 Spock travels back in time to prevent his death as a young Vulcan.
More Tribbles, More Troubles
S1 Ep5
7.2
6th Oct 1973
Stardate: 5392.4 Cyrano Jones introduces tribbles that cannot reproduce.
Albatross
S2 Ep4
7.1
28th Sep 1974
Stardate: 5275.6 Dr. McCoy is arrested and held responsible for causing a plague that ravaged the planet Dramia II, where he performed a mass-innoculation 19 years earlier.
The Counter-Clock Incident
S2 Ep6
7.0
12th Oct 1974
Stardate: 6770.3 With Commodore Robert April (the first commander of the Enterprise) on board, Kirk pursues a ship plunging into a supernova, and enters a universe where time runs backwards.
The Terratin Incident
S1 Ep11
6.9
17th Nov 1973
Stardate: 5577.3 The Enterprise crew begins to shrink after radiation exposure.
The Eye of the Beholder
S1 Ep15
6.9
5th Jan 1974
Stardate: 5501.2 Telepathic aliens put Kirk, Spock and McCoy in a zoo.
The Survivor
S1 Ep6
6.9
13th Oct 1973
Stardate: 5143.3 The Enterprise finds a long-lost explorer.

Worst Episodes of Star Trek

The Jihad
S1 Ep16
6.3
12th Jan 1974
Stardate: 5683.1 Kirk and Spock are recruited for a heist to recover a stolen relic, which if not recovered could spark an galactic jihad.
How Sharper Than a Serpent's Tooth
S2 Ep5
6.3
5th Oct 1974
Stardate: 6063.4 The Enterprise runs into a being that once visited Earth and influenced the Mayan culture.
The Magicks of Megas-tu
S1 Ep8
6.4
27th Oct 1973
Stardate: 1254.4 At the center of the galaxy, the Enterprise discovers a race of powerful aliens.
The Ambergris Element
S1 Ep13
6.5
1st Dec 1973
Stardate: 5499.9 While exploring the planet Argo, Kirk and Spock are turned into water breathers.
Mudd's Passion
S1 Ep10
6.6
10th Nov 1973
Stardate: 4978.5 Space con artist Harry Mudd returns, selling a fake love potion.
The Pirates of Orion
S2 Ep1
6.6
7th Sep 1974
Stardate: 6334.1 With Spock stricken down by a fatal disease, the Enterprise must track down the drug that can cure him before it is too late.
The Practical Joker
S2 Ep3
6.7
21st Sep 1974
Stardate: 3183.3 The computer of the Enterprise gains partial sentience and starts playing practical jokes on the crew.

Star Trek Episode Guide

Beyond the Farthest Star
S1 Ep1
6.8
8th Sep 1973
Stardate: 5521.3 In orbit around a dead star, the Enterprise comes across a huge starship inhabited by a parasitic life form that threatens the entire ship.
Yesteryear
S1 Ep2
7.7
15th Sep 1973
Stardate: 5373.4 Spock travels back in time to prevent his death as a young Vulcan.
One of Our Planets Is Missing
S1 Ep3
6.9
22nd Sep 1973
Stardate: 5371.3 The crew of the Enterprise races to find a way to stop a cloud from destroying inhabited planets.
The Lorelei Signal
S1 Ep4
6.8
29th Sep 1973
Stardate: 5483.7 Female crew members must take over the Enterprise when the men are incapacitated by a race of sirens.
More Tribbles, More Troubles
S1 Ep5
7.2
6th Oct 1973
Stardate: 5392.4 Cyrano Jones introduces tribbles that cannot reproduce.
The Survivor
S1 Ep6
6.9
13th Oct 1973
Stardate: 5143.3 The Enterprise finds a long-lost explorer.
The Infinite Vulcan
S1 Ep7
6.7
20th Oct 1973
Stardate: 5554.4 A race of plant people, and their master, have a plan to force peace onto the galaxy.
The Magicks of Megas-tu
S1 Ep8
6.4
27th Oct 1973
Stardate: 1254.4 At the center of the galaxy, the Enterprise discovers a race of powerful aliens.
Once Upon a Planet
S1 Ep9
6.7
3rd Nov 1973
Stardate: 5591.2 Kirk returns to the "shore leave" planet, but it's not as peaceful as it was when they last saw it.
Mudd's Passion
S1 Ep10
6.6
10th Nov 1973
Stardate: 4978.5 Space con artist Harry Mudd returns, selling a fake love potion.
The Terratin Incident
S1 Ep11
6.9
17th Nov 1973
Stardate: 5577.3 The Enterprise crew begins to shrink after radiation exposure.
The Time Trap
S1 Ep12
6.8
24th Nov 1973
Stardate: 5267.6 The Enterprise crew must work with Klingons to escape from a pocket universe.
The Ambergris Element
S1 Ep13
6.5
1st Dec 1973
Stardate: 5499.9 While exploring the planet Argo, Kirk and Spock are turned into water breathers.
The Slaver Weapon
S1 Ep14
6.7
15th Dec 1973
Stardate: 4187.3 Spock, Sulu, and Uhura discover a time capsule from an ancient and technologically advanced race. However, it draws some unwanted attention.
The Eye of the Beholder
S1 Ep15
6.9
5th Jan 1974
Stardate: 5501.2 Telepathic aliens put Kirk, Spock and McCoy in a zoo.
The Jihad
S1 Ep16
6.3
12th Jan 1974
Stardate: 5683.1 Kirk and Spock are recruited for a heist to recover a stolen relic, which if not recovered could spark an galactic jihad.