The Saskatchewan River (Cree: kisiskāciwani-sīpiy, "swift flowing river") is a major river in Canada, approximately 550 km (340 mi) long, flowing roughly eastward across Saskatchewan and Manitoba to empty into Lake Winnipeg. Through its tributaries the North Saskatchewan and South Saskatchewan, its watershed encompasses much of the prairie regions of central Canada, stretching westward to the Rocky Mountains in Alberta and northwestern Montana in the United States. It reaches 1,939 kilometres (1,205 mi) to its farthest headwaters on the Bow River, a tributary of the South Saskatchewan in Alberta.

It is formed in central Saskatchewan, approximately 40 km (25 mi) east of Prince Albert, by the confluence of its two major branches, the North Saskatchewan and the South Saskatchewan, at the Saskatchewan River Forks. Both source rivers originate from glaciers in the Alberta Rockies. The St. Mary River, draining the Hudson Bay Divide region of Glacier National Park, also empties into the Saskatchewan River via the south fork.

Saskatchewan (ⁱ/səˈskætʃɨwən/ or /səˈskætʃɨwɑːn/) is a prairie province in Canada, which has an area of 588,276 square kilometres (227,100 sq mi). Saskatchewan is bordered on the west by Alberta, on the north by the Northwest Territories, on the east by Manitoba, and on the south by the U.S. states of Montana and North Dakota.

As of April 2011, the population of Saskatchewan was estimated at 1,053,960. Residents primarily live in the southern half of the province. Of the total population, 257,300 live in the province's largest city, Saskatoon, while 210,000 live in the provincial capital, Regina. Other major cities include Prince Albert, Moose Jaw, Yorkton, Swift Current and North Battleford.

Saskatchewan was first explored by Europeans in 1690 and settled in 1774, having also been inhabited for thousands of years by various indigenous groups. It became a province in 1905. Saskatchewan's current premier is Brad Wall and its lieutenant-governor is Vaughn Solomon Schofield. Its major industries are agriculture, mining, and energy. "In 1992, the federal and provincial governments signed a historic land claim agreement with Saskatchewan First Nations. Under the Agreement, the First Nations received money to buy land on the open market. As a result, about 761,000 acres have been turned into reserve land and many First Nations continue to invest their settlement dollars in urban areas", including Saskatoon.