Saint-Tharcisius is a parish municipality in Quebec, Canada.

[5] The village was named after Roman martyr Tarcisius who preferred to be killed rather than desecrate the Eucharist in the 3rd century.

[2] Saint-Tharcisius was created in 1937 from merging a section of Saint-Benoît-Joseph-Labre with territories hitherto devoid of municipal organisation.

In 1965, a section of Saint-Tharcisius was taken for the creation of Saint-Alexandre-des-Lacs.

Municipal council (as of 2024):[11] A French-language elementary school, École Saint-Tharcisius, is operated by the Centre de services scolaire des Monts-et-Marées.