Tétreaultville is a key neighbourhood in the Mercier–Hochelaga-Maisonneuve borough of Montreal.
The neighbourhood is bordered by the Anjou neighbourhood to the north, the Longue-Pointe neighbourhood to the west, the city of Montreal East to the east, and the St. Lawrence River to the south.
On March 14, 1907, the village of Tétreaultville separated from Longue-Pointe, creating the municipality of Tétreaultville and the Tétreaultville School Board. On June 4, 1910, Tétreaultville, along with Longue-Pointe and Beaurivage, were annexed to the territory of Montreal. The resulting neighbourhood was named Longue-Pointe. On March 5, 1915, the neighbourhood's name was changed to Mercier, in memory of Honoré Mercier Sr., former Premier of Quebec. The neighborhood, already divided by the presence of Saint-Jean-de-Dieu Hospital, was divided into Mercier East and Mercier West following the construction of the Louis-Hippolyte-La Fontaine bridge-tunnel in 1967. In 2002, during Montreal's municipal mergers, the Hochelaga-Maisonneuve and Mercier neighborhoods became the Mercier–Hochelaga-Maisonneuve borough. Tétreaultville is one of the borough's leading residential neighborhoods.
Tétreaultville commemorates Pierre Tétreault, a prominent local landowner who donated the land for the construction of Sainte-Claire-de-Tétreault Church.