May 31 is the 151st day (152nd in leap years) of the year, with 214 days remaining.
- 1935 – 20th Century Fox is founded.
- 1978 – Star Wars Weekly 17 published.
- 1984 – Richard Riddell is born.
- 1986 – Return of the Jedi Weekly 154 published.
- 2006 – Knights of the Old Republic 5 published.
- 2007 – Star Wars Insider 94 published.
- 2010 – Death Star Battles published.
- 2012 – Star Wars: The Clone Wars Comic UK 6.34 published.
- 2017 – Doctor Aphra (2016) 7 published.
- 2018 – Michael Ford dies.
- 2019 – Star Wars: Galaxy's Edge opens in Disneyland.
- 2019 – "Luke vs. the Rancor - Wrath of the Rancor" airs on YouTube.
- 2022 – The Thrawn Trilogy Boxed Set published.
- 2022 – Star Wars: I Am Your Father published.
- 2023 – Doctor Aphra (2020) 32 published.
- 2023 – Sana Starros 4 published.
- 2023 – The High Republic Adventures (2022) 5 published.
- 2023 – Star Wars: The Bad Batch junior novelization published in France.
