Meech Lake is a lake in the Gatineau Hills near Gatineau, Quebec, in Canada. The Prime Minister of Canada has a cottage on this lake.

In 1987, the Meech Lake Accord for overhauling Canada's constitution was negotiated there between the provincial premiers and then Prime Minister Brian Mulroney.

The lake is located within Gatineau Park and the National Capital Commission operates a beach on the lake during the summer. Meech Lake was named after Reverend Asa Meech, an early settler in this area.

Near the lake, on Meech Creek, are the ruins of a fertilizer plant built by Thomas "Carbide" Willson during the 1900s. Note that, although it is not condoned by the National Capital Commission, the ruins are often used for nude sunbathing. In 1981, Willson's former summer home on Meech Lake was converted into a conference centre, where the discussions on the Meech Lake Accord were later held.