Lanaudière (French pronunciation: [lanodjɛʁ], locally [lanod͡zjaɛ̯ʁ]) is one of the seventeen administrative regions of Quebec, Canada, situated immediately to the northeast of Montreal.

[1] The region of Lanaudière is part of central Quebec and is located between the Saint Lawrence River and the Laurentian Mountains, between Mauricie and the Laurentides.

Lanaudière is made up of three distinct geographical groupings: the southern plain has cities and farming villages and includes many historical locations; the piedmont in the centre has become a vacation spot due to its numerous lakes and natural attractions, and the Laurentian Plateau in the far north in the forested country is known for its fishing and hiking.

Lanaudière's road network was developed according to three north-south axes (25-125, 31-131, 347), all of which have few links with the neighbouring regions.

Lanaudière has two wildlife preserves, the Rouge-Matawin and the Mastigouche, as well as part of the Mont Tremblant park.