March 31 is the 90th day of the year (91st in leap years), with 275 days remaining.
- 1916 – Lucille Bliss is born.
- 1945 – Edwin Catmull is born.
- 1958 – Tony Cox is born.
- 1971 – Ewan McGregor is born.
- 1971 – Mark Newbold is born.
- 1972 – Andrew Bowen is born.
- 1978 – Daniel Mays is born.
- 1995 – Star Wars Technical Journal published in UK.
- 1997 – Planet of Twilight published.
- 1999 – Classic Star Wars: A Long Time Ago... 1 published.
- 1999 – Star Wars Manga: The Empire Strikes Back 3 published.
- 2002 – Marvin Goldhar dies.
- 2004 – "Clone Wars Chapter 14" airs on Cartoon Network.
- 2004 – Star Wars Infinities: Return of the Jedi 4 published.
- 2005 – Everyone's a Critic article published on Wizards of the Coast website.
- 2005 – Star Wars: Revenge of the Sith: The Movie Storybook published.
- 2010 – Legacy (2006) 46 published.
- 2014 – Star Wars: Clone Wars Adventures closes.
- 2015 – A New Dawn paperback published.
- 2020 – Andrew Jack dies.
- 2020 – Star Wars: Episode IX The Rise of Skywalker releases on home media.
- 2020 – The Art of Star Wars: The Rise of Skywalker published.
- 2020 – Star Wars Unfolds: The Original Trilogy published.
- 2021 – Star Wars Insider 201 published.
