Louiseville (French pronunciation: [lwizvil] ⓘ) is a town in the Mauricie region of the province of Quebec in Canada.

This seignory was formed in 1665 by Intendant Jean Talon and granted in 1672 to Charles Dugey Rozoy-de-Mannereuil, officer in the Carignan Regiment.

Just one year later it was renamed to Louiseville in order to avoid confusion with another town called Rivière-du-Loup in the Bas-Saint-Laurent region.

The new name was a tribute to Princess Louise, viceregal consort of Canada, the third daughter of Queen Victoria, who had planned to visit the Mauricie that same year.

[1] On January 1, 1989, the parish and village municipalities merged again and became the Town of Louiseville.