1921 (people)

People with known birthdays included:
 * 15 January - Actor Frank Thornton was born.
 * 1 February - Actor Peter Sallis was born.
 * 12 February - Actor Peter Whitaker was born.
 * 27 February - Actor Richard McNeff was born.
 * 4 March - Comic writer and artist John Ryan was born.
 * 15 April - Actor David Garth was born.
 * 23 April - Actor Gerald Campion was born.
 * 28 April - Actor Nancie Jackson was born.
 * 20 May - Artist Richard Jennings was born.
 * 25 May - Actor Peggy Dixon was born.
 * 19 July - Actor Michael Turner was born.
 * 25 July - Actor Kevin Stoney was born.
 * 12 August - Actor Dermot Tuohy was born.
 * 20 August - Actor Roy Godfrey was born.
 * 22 August - Actor Robert Marsden was born.
 * 11 September - Actor Edwin Richfield was born.
 * 20 September - Visual effects designer Jack Kine was born.
 * 27 September - Producer Milton Subotsky was born.
 * 13 October - Director-General of the BBC Charles Curran was born.
 * 24 October - Actor Walter Henry was born.
 * 29 December - Actor Robert Cawdron was born.
 * Unknown - Composer Don Harper was born.
 * Unknown - Actor Philip Ryan was born.