The parish municipality of Saint-Alexis () is a former parish now part of the current municipality of Saint-Alexis, Quebec, Canada.
Prior to December 19, 2012, the parish of Saint-Alexis was an independent municipality; on that date, it and the village of Saint-Alexis were merged into the new municipality of Saint-Alexis.
The parish was founded in 1855. In 1920, the more urban sector split to became the village municipality of Saint-Alexis. Those two territories were then merged once again, in 2012, for the creation of the current Saint-Alexis.