Réseau de transport de Longueuil (French pronunciation: [ʁezo də tʁɑ̃spɔʁ də lɔ̃ɡœj], RTL; English: Longueuil Transit Network) is a public transit system in the city of Longueuil, Quebec, Canada, and nearby communities on the South Shore of Montreal.

Some of the "former" municipalities demerged (broke away) from the city of Longueuil on January 1, 2006, as the result of referendums.

However, demerged municipalities continue to be served by and to contribute financially to the RTL, since they still belong to the urban agglomeration of Longueuil.

Shared taxis serve the same stops and accept the same tickets and passes as the bus service.

Shared taxis take riders to the nearest transfer point.