April 21 is the 111th day of the year (112th in leap years). There are 254 days remaining.
- 1929 – Ken Nightingall is born.
- 1970 – Jeff Anderson is born.
- 1976 – Filming ends at Elstree Studios for A New Hope interior cantina shots.
- 1981 – Star Wars (1977) 49 published.
- 1986 – Marjorie Eaton dies.
- 1992 – Dark Empire 3 published.
- 1999 – Star Wars: Episode I The Phantom Menace novelization published.
- 1999 – Star Wars: Episode I The Phantom Menace Illustrated Screenplay published.
- 1999 – Star Wars (1998) 5 published.
- 1999 – Vader's Quest 3 published.
- 2004 – Empire 18 published.
- 2004 – Mary Selway dies.
- 2005 – Celebration III begins.
- 2015 – Star Wars Insider 157 published.
- 2020 – Jedi Academy: At Last, Jedi published.
- 2020 – Star Wars: How to Speak Astromech with BB-8 published.
- 2021 – Doctor Aphra (2020) 9 published.
