The Port of Saint John is a port complex that occupies 141 hectares (350 acres) of land along 3,900Â m (12,800Â ft) of waterfront of the Saint John Harbour at the mouth of the Saint John River in the city of Saint John, New Brunswick, Canada. The Port of Saint John, with facilities on both sides of the river, is noted for its extreme tidal range and river currents. Because of the semi-diurnal tides and the river influence, slack water occurs at approximately half tide and not at high or low water as at most other ports.
The port is administered by the Saint John Port Authority, a federal agency. Major products shipped through the port include oil, forest products and potash. Container traffic has been steadily increasing since 2016 with DP World becoming the port operator and Canadian Pacific regaining access to the port in 2020 through the purchase of Central Maine and Quebec Railway. The port of Saint John has three container lines servicing it those being MSC, CMA CGM Maersk and Hapag-Lloyd.