The La Salle Causeway is a causeway that allows Highway 2 to cross the Cataraqui River (the southern entrance of the Rideau Canal) at Kingston, Ontario. The causeway separates Kingston's inner and outer harbours. Construction of the causeway was completed on April 15, 1917.
Three bridges are incorporated into the causeway, the centre one being a Strauss trunnion bascule lift bridge designed by Joseph Strauss, designer of the Golden Gate Bridge in San Francisco.
The La Salle Causeway was named after René-Robert Cavelier, Sieur de La Salle who oversaw the construction of Fort Frontenac in 1673 at, what is now, the western end of the causeway.