The Union populaire was a federal political party in Canada that nominated candidates in the 1979 and 1980 federal elections. The party also nominated one candidate in the 4 May 1981 by-election in the riding of Levis, Quebec.
The party gained little support, and was not supported by the Parti Québécois, the pro-independence party that formed the government of the province at the time. That party had a long-standing policy of not participating in federal politics.