The Battle of Trois-Rivières was fought on June 8, 1776, during the American Revolutionary War. A British army under Quebec Governor Guy Carleton defeated an attempt by units from the Continental Army under the command of Brigadier General William Thompson to stop a British advance up the Saint Lawrence River valley. The battle occurred as a part of the American colonists' invasion of Quebec, which had begun in September 1775 with the goal of removing the province from British rule.

The crossing of the Saint Lawrence by the American troops was observed by Quebec militia, who alerted British troops at Trois-Rivières. A local farmer led the Americans into a swamp, enabling the British to land additional forces in the village, and to establish positions behind the American army. After a brief exchange between an established British line and American troops emerging from the swamp, the Americans broke into a somewhat disorganized retreat. As some avenues of retreat were cut off, the British took a sizable number of prisoners, including General Thompson and much of his staff.

This was the last battle of the war fought on Quebec soil. Following the defeat, the remainder of the American forces, under the command of John Sullivan, retreated, first to Fort Saint-Jean, and then to Fort Ticonderoga. The invasion of Quebec ended as a disaster for the Americans, but Arnold's actions on the retreat from Quebec and his improvised navy on Lake Champlain were widely credited with delaying a full-scale British counter thrust until 1777. Numerous factors were put forward as reasons for the invasion's failure, including the high rate of smallpox among American troops. Carleton was heavily criticized by Burgoyne for not pursuing the American retreat from Quebec more aggressively. Due to these criticisms and the fact that Carleton was disliked by Lord George Germain, the British Secretary of State for the Colonies and the official in King George's government responsible for directing the war, command of the 1777 offensive was given to General Burgoyne instead (an action that prompted Carleton to tender his resignation as Governor of Quebec).

A significant portion of the Continental forces at Fort Ticonderoga were sent south with Generals Gates and Arnold in November to bolster Washington's faltering defense of New Jersey. (He had already lost New York City, and by early December had crossed the Delaware River into Pennsylvania, leaving the British free to operate in New Jersey.) Conquering Quebec and other British colonies remained an objective of Congress throughout the war. However, George Washington, who had supported this invasion, considered any further expeditions a low priority that would divert too many men and resources away from the main war in the Thirteen Colonies, so further attempts at expeditions to Quebec were never fully realized.