The Township of Langley is a district municipality immediately east of the City of Surrey in southwestern British Columbia, Canada. It extends south from the Fraser River to the Canada–United States border, and west of the City of Abbotsford. Langley Township is not to be confused with the City of Langley, which is adjacent to the township but politically is a separate entity. Langley is located in the eastern part of Metro Vancouver.

The Fraser River is the longest river within British Columbia, Canada, rising at Fraser Pass near Blackrock Mountain in the Rocky Mountains and flowing for 1,375 kilometres (854 mi), into the Strait of Georgia just south of the City of Vancouver. The river's annual discharge at its mouth is 112 cubic kilometres (27 cu mi) or 3,550 cubic metres per second (125,000 cu ft/s), and each year it discharges about 20 million tons of sediment into the ocean.