Kisseynew Lake is a large lake in the Canadian provinces of Manitoba and Saskatchewan, within the Churchill River drainage basin. The Churchill River "drains most of north-central Saskatchewan into Manitoba" where it then flows east into the Hudson Bay. Kisseynew Lake's outflow is the Kississing River, which flows through Kississing Lake en route to the Churchill River. There are no communities on the lake.
Kisseynew Lake is a large, elongated lake with multiple islands, bays, and narrows that straddles the SaskatchewanâÂÂManitoba border. Most of the lake is within Manitoba. It covers an area of , has a long shoreline, and is surrounded by boreal forest in the Canadian Shield. The climate is subarctic. The lake's outflow, the Kississing River, flows out from the northern shore.
There are no communities on the lake. Flin Flon, Manitoba, and Creighton, Saskatchewan, the nearest sizable communities, are about to the south-west. Manitoba's Highway 800, which begins to the south at Provincial Trunk Highway 10, crosses Kisseynew Lake at Lobstick Narrows en route to Kississing Lake. Accessible via logging roads and a three-mile long boat ride, is a fishing lodge and outfitters.
Fish species commonly found in Kisseynew Lake include walleye, lake trout, and northern pike.