1814 in the United States

Federal government

• President: James Madison (DR-Virginia)
• Vice President:

Elbridge Gerry (DR-Massachusetts) (until November 23)

vacant (starting November 23)

• Chief Justice: John Marshall (Virginia)
• Speaker of the House of Representatives:

Henry Clay (DR-Kentucky) (until January 19)

Langdon Cheves (DR-South Carolina) (starting January 19)

• Congress: 13th

January–June

• January 22–24 – Creek War – Andrew Jackson fights the Red Sticks at the battles of Emuckfaw and Enotachopo Creek.
• January 27 – Creek War – Battle of Callabee Creek: Red Sticks unsuccessfully attack Georgia volunteers in present-day Macon County, Alabama.
• March 9 – The USS Enterprise reaches Wilmington, North Carolina, returning from the Caribbean.
• March 27 – Creek War – Battle of Horseshoe Bend: In northern Alabama, United States forces under General Andrew Jackson defeat the Creek Indians.
• May 5 – War of 1812 – The British attack Fort Ontario at Oswego, New York.

July–December

• July 5 – War of 1812 – Battle of Chippawa: American Major General Jacob Brown defeats British General Phineas Riall at Chippawa, Ontario.
• July 24 – War of 1812 – General Phineas Riall advances toward Niagara Falls, Ontario to halt Jacob Brown's American invaders.
• July 25 – War of 1812 – Battle of Lundy's Lane: Reinforcements arrive near Niagara Falls, Ontario for General Phineas Riall's British and Canadian force, and a bloody, all-night battle with Jacob Brown's Americans commences at 1800 hours; Americans retreat to Fort Erie.
• July 26–August 4 – War of 1812 – Americans fail to recapture Fort Mackinac at the Battle of Mackinac Island.
• August 24 – War of 1812 – Battle of Bladensburg: British forces defeat the Americans at Bladensburg, Maryland, allowing the British to enter Washington, D.C.
• August 24 – War of 1812 – Burning of Washington – British troops, after defeating American forces, at the Battle of Bladensburg, occupy Washington, D.C., setting numerous buildings on fire, including the Capitol and Presidential Mansion.
• August 28 – War of 1812 – Alexandria, Virginia offers surrender to the British fleet without a fight.
• September 11 – War of 1812 – Battle of Lake Champlain: An American squadron under Thomas Macdonough defeats the British squadron, ultimately forcing the invading army to retreat back into Canada.
• September 13 – War of 1812 – The British bombard Fort McHenry at Baltimore. The British failure at the Battle of Baltimore is a turning point in the war, and the American defense of the fort inspires Francis Scott Key to compose the poem later set to music as "The Star-Spangled Banner".
• September 21 – War of 1812 – British forces abandon the Siege of Fort Erie.
• November 7 – War of 1812 – Andrew Jackson seizes Pensacola, Florida.
• November 23 – Vice President Elbridge Gerry dies from heart failure. The office remains vacant through the remainder of James Madison's presidency.
• December 15 – The Hartford Convention is convened by members of the American Federalist Party.
• December 24 – War of 1812 – The Treaty of Ghent is signed, officially ending the war. The treaty is later ratified by the Americans on February 16, 1815.

Undated

• Completion of the Boston Manufacturing Company's integrated cotton weaving mill on the Charles River at Waltham, Massachusetts, engineered by Paul Moody for Francis Cabot Lowell and 'The Boston Associates', and inaugurating the Waltham-Lowell system of manufacturing.^[1]
• "The world's first complex machine mass-produced from interchangeable parts", Eli Terry's wooden pillar-and-scroll clock, comes off the production line in Plymouth, Connecticut.^[2]
• The Harmony Society establishes Harmony, Indiana Territory.

Ongoing

• War of 1812 (1812–1815)
• Creek War (1813–1814)