| January 4 | King Charles I with 400 soldiers attacks the English parliament |
| January 10 | King Charles I and family flee London for Oxford |
| March 1 | Georgeana (York) Maine became the 1st incorporated American city |
| March 9 | English Queen Henriette Mary arrives in Hellevoetsluis, Netherlands |
| March 12 | Abel Tasman is 1st European in New Zealand |
| May 6 | Ville Marie (Montreal) forms |
| May 18 | Montreal Canada founded |
| June 14 | 1st compulsory education law in America passed by Massachusetts |
| August 13 | Christiaan Huygens discovers Martian south polar cap |
| August 14 | Able Tasmans ships Heemskerck/Zeehaen depart out of Batavia |
| August 22 | Civil War in England began between Royalists and Parliament |
| September 19 | Perpignan surrenders to French troops |
| September 23 | Harvard College in Cambridge, Massachusetts, 1st commencement |
| October 23 | Battle at Edgeville (Warwick): King Charles I vs English parliament |
| November 2 | 2nd battle at Breitenfeld Saksen: Sweden beat Ferdinand III |
| November 13 | Battle at Turnham Green, London: King Charles I vs English parliament |
| November 24 | Abel Janzoon Tasman discovers Van Diemen's Land (Tasmania) |
| December 13 | New Zealand discovered by Dutch navigator Abel Tasman |
| December 22 | Pope Urbanus VIII publishes degree In eminente |
