Old Port of Montreal–Longueuil Ferry

The Old Port of Montreal–Longueuil Ferry is a Summer ferry service operating on the Saint Lawrence River between Montreal and Longueuil, Quebec, Canada. It carries pedestrians and cyclists from the Réal Bouvier Marina in Longueuil to Saint Helen's Island and the Jacques-Cartier Pier Old Port of Montreal.

It operates from late-May until early-October, with hourly departures during regular business hours seven days a week from late-June to early-September. The length of the crossing is 5.5 km.

The ferries are capable of going at speeds of up to 12 kn. They are 68 ft long and 22 ft wide. They have a capacity of 196 passengers, or 150 passengers and 70 bicycles.

Both ends of the ferry crossing are linked to Quebec's Route Verte bicycle trail network.