The Battle of Saint-Pierre was a military confrontation on March 25, 1776, near the Quebec village of Saint-Pierre, south of Quebec City. This confrontation, which occurred during the Continental Army's siege of Quebec following its defeat at the Battle of Quebec, was between forces that were both largely composed of Canadian militia, including individuals on both sides of the conflict that had been recruited in the same communities. The Patriot forces routed the Loyalist forces, killing at least 3 and capturing more than 30. Early in the Revolutionary War, the Second Continental Congress had invited the citizens of the Province of Quebec to join them, first by addressing letters to them, and then by invading the province with the goal of ousting the British government of General Guy Carleton. The invasion reached a peak on December 31, 1775, when the Continental Army, under the command of Major General Richard Montgomery, was defeated before the gates of the city of Quebec. The battle resulted in the death of Montgomery and the capture of over 400 men. Following the defeat, the remnants of the Army, now under the command of Brigadier General Benedict Arnold, besieged the city. During this time, they worked to recruit French-speaking Canadians to support their efforts toward independence, while Carleton and the British worked to build Loyalist support among the Canadiens. Beaujeu, who had previously been asked to raise militia in support of the British, set about raising a force to make an attack on the unfinished battery at Pointe-Lévis.

By March 23, he had assembled over 100 men at Sainte-Anne-de-la-Pocatière. When this force reached Saint-Thomas on the night of March 24, it was joined there by an additional 70 men. An advance guard from this force, numbering 46, was sent to Saint-Pierre under the command of Couillard and Gaspé, where they established a base at the house of Michel Blais, a Loyalist and former commander of the local militia. The Loyalist advance guard was surprised by the arrival of the Patriot forces at Saint-Pierre, and barricaded themselves in the house, where they were attacked by Dubois’ men with musket and cannon. While a few escaped, the majority surrendered, and three were killed. Their priest, Charles-François Bailly de Messein, was wounded in this battle. It is said that, because both sides recruited in the same areas to build their militias, that there were some families whose members fought against each other in this battle. Beaujeu, his plans uncovered, disbanded the militia and went into hiding on Île-aux-Grues. After Dubois established that the action had been sanctioned by the British, some of the prisoners were released after promising not to take up arms again. The remaining 21 prisoners were sent to the American camp outside Quebec. The skirmish itself had no notable effect on relations between the people and the occupying Americans, which were already deteriorating as the siege dragged on. This was due in part to the fact that the Americans, rather than paying for their supplies in coin, paid with Continental paper currency or promissory notes, deemed to be of little worth by the locals.