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

Frank Bellamy is born.

Jim Goodwin is born.

Richard Libertini is born.

Booker Bradshaw is born.

Douglas E. Wise is born.

Jill Jacobson is born.

Ben Lemon is born.

Nichelle Nichols is contracted to play Lieutenant Uhura, only three days before filming begins on the first regular Star Trek episode, .

First day of filming on .

Tayler Sheridan is born.

Nicole Randall is born.

Angola Murdoch is born.

David Ajala is born.

Musical score for  is recorded.
Franklyn Seales dies.

Twenty-sixth day of filming on .
Fourth day of second unit filming on .

Thirty-second day of filming on .

 airs.

Robert Gist dies.
Thirty-eighth day of filming on .

 premieres in Portugal.

Cort Rogers is born.

Sixth day of filming on .

 airs.

Stephen Mines dies.

Unknown year
Alexander Slanger is born.

de:21. Mai
es:21 mayo
it:21 maggio
nl:21 mei
pt:21 de maio
ru:21 мая
sv:21 maj