1921 in science fiction

The year 1921 was marked, in science fiction, by the following events.

Births

 * January 14: Kenneth Bulmer, British writer (died 2005)
 * January 25: Russell Braddon, Australian writer (died 1995)
 * May 23: James Blish, American writer (died 1975)
 * May 31: Arthur Sellings, British writer (died 1968)
 * June 6: Francis G. Rayer, British writer (died 1981)
 * August 11: Henri Viard, French writer (died 1989)
 * August 19: Gene Roddenberry, American television screenwriter, producer and creator of the original Star Trek television series (died 1991)
 * September 12: Stanisław Lem, polish writer (died 2006)
 * October 7: H. H. Hollis, American writer (died 1977)
 * November 9: Alfred Coppel, American writer (died 2004)
 * Vladimir Colin, writer (died 1991)

Awards
The main science-fiction Awards known at the present time did not exist at this time.

Short stories

 * L'Homme truqué, by Maurice Renard