The Legislative Assembly of Assiniboia (French: Assemblée législative d'Assiniboine) was a short-lived legislature established to pass laws for the North-Western Territory and Rupert's Land under the provisional government led by Louis Riel from 1869 to 1870. The Legislative Assembly was named after the Council of Assiniboia that previously managed the territories before the Hudson's Bay Company sold the land to Canada in 1869.