The lieutenant governor of Quebec (; is the representative in Quebec of the monarch, who operates distinctly within the province but is also shared equally with the ten other jurisdictions of Canada, as well as the other Commonwealth realms and any subdivisions thereof, and resides predominantly in his oldest realm, the United Kingdom. The lieutenant governor of Quebec is appointed in the same manner as the other provincial viceroys in Canada and is similarly tasked with carrying out most of the monarch's constitutional and ceremonial duties. The present and 30th lieutenant governor of Quebec is Manon Jeannotte, who has served in the role since January 25, 2024.

By the arrangements of the Canadian federation, Canada's monarchy operates in Quebec as the core of the province's Westminster-style parliamentary democracy and constitution. As such, the Crown within Quebec's jurisdiction is referred to as the Crown in Right of Quebec, His Majesty in Right of Quebec, or the King in Right of Quebec. The Constitution Act, 1867, however, leaves many royal duties in the province specifically assigned to the sovereign's viceroy, the lieutenant governor of Quebec, whose direct participation in governance is limited by the conventional stipulations of constitutional monarchy.