- Jun 7 England declares war on France
- Aug 3 Dutch States-General meet at Valenciennes
- Aug 10 Battle of St Quentin in Picardy: Lamoraal, Count of Egmont and Philibert, Duke of Savoy (Spanish Empire) beat the Duke of Montmorency (France)
- Sep 11 Catholic & Lutheran theology debated in Worms
- Dec 3 1st Covenant of Scottish protestants form