Sainte-Agathe-des-Monts is a town in the province of Quebec in the regional county municipality of Les Laurentides, in the administrative region of Laurentides, also known as the "Laurentians" or the Laurentian Mountains (in English). Sainte-Agathe-des-Monts borders on a lake called Lac des Sables, and is located approximately 100 kilometres north of Montreal.