Cartier was a provincial electoral division in the Canadian province of Manitoba. It was established in 1878 and abolished for the 1981 provincial election. The riding was named after the Rural Municipality of Cartier, which formed its primary geographic basis, located west of Winnipeg.
The constituency was initially created as part of the expansion of the Legislative Assembly of Manitoba following the province's initial formation. Throughout its history, Cartier was predominantly a rural and agricultural riding. It typically encompassed the communities and farmlands within the Rural Municipality of Cartier, although its exact boundaries might have undergone minor adjustments during periodic electoral redistribution processes.
The electoral district served to elect a Member of the Legislative Assembly (MLA) to the Legislative Assembly of Manitoba. Its political representation often reflected the rural nature of the area, with various political parties and independent candidates securing election over the decades. Upon its abolition in 1981, its territory was redistributed into neighbouring constituencies as part of a broader redrawing of Manitoba's electoral map.