January 20 - Outside of the walls of the Thailand capital of Ayutthaya, tens of thousands of invaders from Burma are confronted by Thai defenders led by General Phya Taksin. The defenders are overwhelmed and the survivors take refuge inside Ayutthaya. The siege continues for 15 months before the Burmese attackers collapse the walls by digging tunnels and setting fire to debris. The city falls on April 9, 1767, and King Ekkathat is killed.
February 5 - An observer in Wilmington, North Carolina reports to the Edinburgh newspaper Caledonian Mercury that three ships have been seized by British men-of-war, on the charge of carrying official documents without stamps. The strict enforcement causes seven other ships to leave Wilmington for other ports.
February 15 - Protesting against the Stamp Act 1765, members of the New York CitySons of Liberty travel to Pennsylvania and set fire to a British supply of tax stamps before the stamps can be taken to distributors in the province of Maryland.
February 20 - The Pennsylvania Gazette reports that a British sloop off Wilmington, North Carolina, has seized a sloop sailing from Philadelphia, and another sailing from Saint Christopher, on the charge of carrying official documents without stamps. In response, local residents threaten to burn a Royal Man-of-War attempting to deliver stamps to Wilmington, forcing the ship to return to the mouth of the Cape Fear River.
March 18 - American Revolution: The British Parliament repeals the Stamp Act, which has been very unpopular in the British colonies; the persuasion of Benjamin Franklin is considered partly responsible. The Declaratory Act asserts the right of Britain to bind the colonies in all other respects.
April–June
April 3 - Seventeen days after the Stamp Act's repeal in London, news reaches America of the decision.
May 29 - In a paper read to the Royal Society, British theoretical chemist Henry Cavendish first describes his process of producing what he refers to as "inflammable air" by dissolving base metals such as iron, zinc and tin in a flask of sulfuric acid or hydrochloric acid, drawing the conclusion that the vapor that was released is different from air. Seven years later, French chemist Antoine Lavoisier bestows the name "hydrogen" on the gas.
May 30 - The Theatre Royal, Bristol, opens in England. Also this year in England, the surviving Georgian Theatre opens as a playhouse.
June 4 - On the occasion of the 28th birthday of King George III, members of the Sons of Liberty in Manhattan erect a liberty pole as a protest for the first time. The historic symbol, a tall "wooden pole with a Phrygian cap" is placed "on the Fields somewhere between Broadway and Park Row". British soldiers cut down the pole in August.
July–September
July 1 - François-Jean de la Barre, a young French nobleman, is tortured and beheaded, before his body is burnt on a pyre, along with a copy of Voltaire's Dictionnaire philosophique nailed to his torso, for the crime of not saluting a Roman Catholic religious procession in Abbeville, and for other sacrileges, including desecrating a crucifix.
August 10 - During the occupation of New York, members of the 28th Foot Regiment of the British Army chop down the liberty pole that was erected by the Sons of Liberty on June 4. The Sons of Liberty put up a second pole the next day, and that pole is cut down on August 22.
August 13 - A hurricane sweeps across the French island colony of Martinique, killing more than 400 people and destroying the plantation owned by Joseph-Gaspard de La Pagerie, the father of the future French Empress Joséphine.
September 1 - The revolt in Quito is ended peacefully as royal forces enter the city under the command of Guayaquil Governor Pedro Zelaya. Rather than seeking retribution from the Quito citizens over their insurrection that has broken the monopoly over the sale of the liquor aguardiente, Zeleaya oversees a program of reconciliation.
September 23 - John Penn, the Colonial Governor of Pennsylvania and one of the four Penn family owners of the Pennsylvania land grant, issues a proclamation forbidding British American colonist residents from building settlements on lands in the west "not yet purchased of the Nations" of the Iroquois Indians.
October 4 - France formally cedes its rights to the Malouines Islands to Spain. On March 24, Spain renames the islands the Malvinas, and in 1833, the United Kingdom captures the two islets from Argentina and renames them the Falkland Islands.
November - Raja Lumu consolidates his claim to the Selangor Sultanate by marriage to the niece of the Sultan of Perak.
November 27 - A British sloop-of-war is searching all vessels passing near Cape Lookout, North Carolina, and some vessels have been seized, according to an observer in New York City, in the Province of New York, reporting to the Pennsylvania Gazette.