The Pays d'en Haut (French: [pɛ.i dɑ̃ o]; Upper Country) was a territory of New France covering the regions of North America located west of Montreal.

The Pays d'en Haut was established in 1610 and depended on the colony of Canada until 1763, when the Treaty of Paris ended New France, and both were ceded to the British as the Province of Quebec.

By 1660, France started a policy of expansion into the interior of North America from Canada, with the objectives to locate a Northwest Passage to China, to exploit the territory's natural resources, such as fur and mineral ores, and to convert the native population to Catholicism.

In 1671, Father Jacques Marquette established a French mission at Michilimackinac that would over the next half century become a waypoint for exploration, a place for diplomatic relations with natives, and a commercial center for fur trade.

The French settlements in the Pays d'en Haut south of the Great Lakes were Detroit, La Baye, Sault Sainte-Marie, Saint Ignace, and Vincennes.