Tsawwassen is a suburban, mostly residential neighbourhood in the southwestern part of the Corporation of Delta. Tsawwassen has an estimated population of 25,000 permanent residents. The name means "looking toward the sea" in the local native language (Coast Salish). Tsawwassen provides the only road access to the community of Point Roberts via 56th Street. It is also the location of BC Ferries' flagship terminal, built in 1959 to provide foot-passenger and motor vehicle access from the Lower Mainland to the southern part of Vancouver Island and the Southern Gulf Islands. Because Tsawwassen touches a shallow bank, the ferry terminal is built at the southwestern end of a 3 km-long causeway that juts out into the Strait of Georgia. The ferry dock and causeway are part of Highway 17.

The southern border of Tsawwassen runs along the 49th Parallel North, which is also the border between Canada and the United States.

See also: List of place names in Canada of aboriginal origin