21 October
A list of events which occurred on the 21st of October.

Joseph Mullendore is born.

Georgia Brown is born.

Julie Parrish is born.

Russ Simpson is born.

Carmen Carter is born.

Faye Barge is born.

Third day of filming on .
Final draft script for  is revised for a third time.

Sixth day of filming on .
First draft teleplay for the undeveloped Original Series episode "The Joy Machine" by Meyer Dolinsky is submitted, based on a story outline by Theodore Sturgeon.

Tami-Adrian George and Nathan Anderson are born.

Ernest Haller dies.

The Thirty-Second UK Story Arc concludes in Valiant & TV21 #56 with the ninth of nine installments.

Forty-ninth and last day of filming on . Principal photography is completed.

Third day of filming on .

Ninth day of filming on .
Seventh and final day of filming on .

Kareem Stroud is born.

 airs.
 is viewed by Gene Roddenberry, three days before his death.
Third day of filming on .
CIC Video releases Next Generation volumes 25, 26, and 27 on VHS in the UK, starting the third season release.

Third day of filming on .

Re-shots of Kirk's death scene for .
Second day of filming on .
Thirty-fourth and final day of filming on . 

 premieres in South Korea.

 airs.
Sixth day of filming on .

Amanda Arcuri is born.
First day of filming on .
Second day of filming on .

 airs.
 airs.

Sixth day of filming on .

Seventh and final day of filming on .
Paramount Home Entertainment releases Enterprise volume 1.12 on VHS in the UK. 

First day of filming on .
Second-unit filming on .

Seventh and final day of filming on .

Remastered version of  airs.

IDW Publishing releases the trade paperback collection of Mission's End.
IDW Publishing releases "Nero, Number Three", issue #3 of Star Trek: Nero.

IDW Publishing releases "Live Evil, Part 1", issue #50 of the ongoing Star Trek series.

 premieres in Japan.

Dick Cherney dies.

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