November 5 - DeWitt Clinton defeats James Madison the 1812 United States election.
November 10 - The British General election sees victory for the Tory party under Robert Jenkinson, 2nd Earl of Liverpool.
December 29 - War of 1812: The British ship HMS Java is defeated off the Brazilian coast by USS Constitution.
Febraury 11 - War of 1812: Beginning of the construction of Fort Meigis in Ohio. It is put under the control of General William Henry Harrison with Major Amos Stoddard commander of the artillery.
March 4 - DeWitt Clinton is sworn in as 5th president of the United States of American, succeeding James Madison.
May 29 - Mexican War of Independence: Battle of Rosillo Creek - Republican forces defeat the Spanish Royalist forces in modern day Rosillo Creek.
April 27 - War of 1812: Battle of York - United States forces destroy and loot, but do not hold York, the capital of Upper Canada.
May 27 - War of 1812: American forces occupy Fort George in Canada.
June 6 - War of 1812: Battle of Stoney Creek - British forces numbering to 700 under John Vincent defeat an American force 3 times its size under William Winder and John Chandler.
July - War of 1812: Second siege of Meigis begins.
July 5 - War of 1812: The beginning of the three-week sieges of Fort Schlosser, Black Rock and Plattsburgh.