Fort Saskatchewan is a mid-sized city along the North Saskatchewan River in Alberta, Canada. It is 25 kilometres (16 mi) northeast of Edmonton, Alberta's capital city. Fort Saskatchewan is part of the Edmonton census metropolitan area and is one of 24 municipalities that constitute the Edmonton Metropolitan Region Board (EMRB). Fort Saskatchewan's population in the 2016 federal census was 24,149. Its population has since increased to 26,942 according to the city's 2019 municipal census.

The city was founded as a North-West Mounted Police fort and was later home to a large provincial gaol; the city prides itself on its "law and order" history. The original fort was located across the river from the hamlet of Lamoureux, and the city opened a replica of the fort next to its original site in 2011. Fort Saskatchewan is bordered by Strathcona County to the south and east, Sturgeon County to the north and west, and the City of Edmonton to the southwest. Sturgeon County is across the North Saskatchewan River.

The city is best known for its proximity to petrochemical facilities, including Dow Chemical, Sherritt International, Nutrien (formerly Agrium), and Shell Canada. It is also known for its flock of 50 sheep that roam the Fort Heritage Precinct throughout the summer months, eating the grass. The city mascot is a sheep named Auggie.