- 20 May 1883 King Faisal I is born in Taif, The Hijaaz.
- 17 May 1917 General Moderator Edward Moore O'Kinneide is born in Tshapakwidak, Massachussets Bay
- 2 May 1935 King Faisal II of Iraaq and the Hijaaz is born in Baghdaad.
- 6 May 1938 - 76 people died in the Dornburg Disaster, in Rio de Janeiro, Brasil.
- 23 May 1961 - First supersonic flight piloted by Major Karel Jagr.
- 17 May 2005 - SpaceOrg founded by the merger of several Central Asian financiers and amateur space organizations.
- 28 May 2006 - Empress Gacudai of Japan and First President Jean-François Young of Louisianne are assassinated in Lyons-sur-Mizouri, Louisianne.