Sylvan Lake is a town in central Alberta, Canada. It is located approximately 25 kilometres (16 mi) west of the City of Red Deer along Highway 11 or Highway 11A. It is on the southeast edge of Sylvan Lake, a 15-kilometre-long (9.3 mi) freshwater lake that straddles the boundary between Red Deer County and Lacombe County.

Alberta Provincial Highway No. 11, commonly referred to as Highway 11 and officially named the David Thompson Highway, is a provincial highway in central Alberta, Canada. It runs for 318 km (198 mi) from Highway 93 at Saskatchewan River Crossing near Mount Sarbach in Banff National Park east to Highway 12 near Nevis. It passes by Nordegg and through Rocky Mountain House, Sylvan Lake and Red Deer along its course. The highway is named after David Thompson, a British-Canadian fur trader, surveyor, and map-maker who explored the area between Rocky Mountain House and Kootenae House through Howse Pass.