- Jan 18 French General Louis II of Condé arrested and imprisoned at Vincennes
- Apr 20 Dutch East India Company (VOC) management sets new guidelines
- Apr 27 The Battle of Carbisdale: Royalist army under Marquess of Montrose invades mainland Scotland from Orkney; defeated by a Covenanter army.
- Apr 30 French rebel Henri de la Tour Turenne signs treaty with Spain
- Jun 9 The Harvard Corporation, the more powerful of the two administrative boards of Harvard, is established. First legal corporation in the Americas.
- Jul 30 Prince Willem II occupies Amsterdam
- Aug 3 Viceroy Willem II and Amsterdam reach accord about standing army
Victory in Battle
Sep 3 Battle of Dunbar; Oliver Cromwell's English New Model Army defeats Scottish force in surprise attack
- Sep 29 2nd Fronde, the Fronde of the Princes uprising ends in France
- Sep 29 Henry Robinson opens 1st marriage bureau (England)
Event of Interest
Dec 21 Johan de Witt installed as Dutch Pensionary of Dordrecht
