- August 6: Pope Urban VIII is elected to the Papacy.
- Change of emperor of the Ottoman Empire from Mustafa I (1617-1623) to Osman II (1618-1622)
- Change of emperor of the Ottoman Empire from Osman II (1618-1622) to Murat IV (1623-1640)
- Wilhelm Schickard invents his "Calculating Clock", and early mechanical calculator.
- Procopius's long-lost Secret History is rediscovered in the Vatican Library.
- Saint Kitts and Nevis colonized by England.