The Labrador Peninsula, also known as the Quebec-Labrador Peninsula, is a large peninsula in eastern Canada. It is bounded by Hudson Bay to the west, the Hudson Strait to the north, the Labrador Sea to the east, and the Gulf of Saint Lawrence to the southeast. The peninsula includes the region of Labrador, which is part of the province of Newfoundland and Labrador, and the regions of Saguenay–Lac-Saint-Jean, Côte-Nord, and Nord-du-Québec, which are in the province of Quebec. It has an area of 1,400,000 km2 (541,000 sq mi).

A peninsula is a landform that extends from a mainland and is surrounded by water on most sides. Peninsulas exist on all continents. The largest peninsula in the world is the Arabian Peninsula.