- 1777 17 Oct The British are defeated at the Battle of Saratoga, a turning point in the American War of Independence.
- 1968 17 Oct Two black US athletes make a raised-fist protest against racism on the podium at the Mexico Olympics.
- 1973 17 Oct Opec, dominated by its Arab members, votes to use oil as a weapon in the Yom Kippur War.

