1968 (Production)
From Trekipedia
January
- 5 January: "The Gamesters of Triskelion" airs.[1]
- 12 January: "A Piece of the Action" airs.[1]
- 19 January: "The Immunity Syndrome" airs.[1]
February
- 2 February: "A Private Little War" airs.[1]
- 9 February: "Return to Tomorrow" airs.[1]
- 16 February: "Patterns of Force" airs.[1]
- 23 February: "By Any Other Name" airs.[1]
March
- 1 March: "The Omega Glory" airs.[1]
- 8 March: "The Ultimate Computer" airs.[1]
- 15 March: "Bread and Circuses" airs.[1]
- 29 March: "Assignment: Earth" airs.[1]
September
- 20 September: "Spock's Brain" airs.[1]
- 27 September: "The Enterprise Incident" airs.[1]
October
- 4 October: "The Paradise Syndrome" airs.[1]
- 11 October: "And the Children Shall Lead" airs.[1]
- 18 October: "Is There In Truth No Beauty?" airs.[1]
- 25 October: "Spectre of the Gun" airs.[1]
November
- 1 November: "Day of the Dove" airs.[1]
- 8 November: "For the World is Hollow and I Have Touched the Sky" airs.[1]
- 15 November: "The Tholian Web" airs.[1]
- 22 November: "Plato's Stepchildren" airs.[1]
- 29 November: "Wink of an Eye" airs.[1]
December
- 20 December: "Elaan of Troyius" airs.[1]