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

Billy Vernon is born.

Terrence Evans is born.

Monte Markham is born.

Mariette Hartley is born.

Bob Cummings and Marcy Lafferty are born.

Leigh J. McCloskey is born.

Josh Pais is born.

Jim Argenbright is born.

Carey Scott is born.

Sixth day of filming on . 
First draft script for  is submitted.

Second day of filming on .
Revised final script draft for  is submitted.
The score for , composed by Gerald Fried, is recorded.

Third day of filming on .
Final draft script for  is submitted, titled "The Children Are Waiting".

The Sixth UK Story Arc begins in Joe 90: Top Secret #23 with the first of eight installments.

Jack Guzman is born.

Forty-eighth day of filming on . Excelsior and Enterprise bridge scenes are filmed today, as well as Christian Slater's cameo.

 airs.

Clare McConnell is born.

Fifty-fourth day of filming on .

Charlene Polite dies.
CIC Video releases Next Generation volume 2.6, Deep Space Nine volume 7.6 and Voyager volume 5.6 on VHS in the UK.

Remastered version of  airs.

IDW Publishing releases issue #9 of Star Trek: Boldly Go.

de:21. Juni
es:21 junio
it:21 giugno
nl:21 juni
pt:21 de junho
ru:21 июня
sv:21 juni