The Exo Sorel-Varennes sector, formally the Conseil Intermunicipal de Transport Sorel-Varennes, is the division of Exo that delivers bus service to the municipalities in the area northeast from Montreal along the right bank of the Saint Lawrence River in Quebec, Canada. The communities served stretch downstream along Quebec Highway 132, from Varennes through Saint-Amable, Verchères, Contrecoeur and Sorel.