- 1453 17 Jul The French defeat the English at the Battle of Castillon, in the last clash of the Hundred Years War.
- 1917 17 Jul George V announces that the British royal family's name will change from Saxe-Coburg-Gotha to Windsor.
- 1936 17 Jul The Spanish Civil War begins when generals Francisco Franco and Emilio Mola lead a right-wing uprising.

