Fort San is a resort village in the Canadian province of Saskatchewan within Census Division No. 6. It is on the shores of Echo Lake of the Fishing Lakes in the Rural Municipality of North Qu'Appelle No. 187. It is 3 km (1.9 mi) west of Fort Qu'Appelle and approximately 77 km (48 mi) northeast of Regina.

The Fishing Lakes, also called the Calling Lakes or the Qu'Appelle Lakes, are a chain of four lakes in the Qu'Appelle Valley cottage country about 40 miles (64 km) to the north-east of Regina in the Canadian province of Saskatchewan. The lakes are in a region called the Prairie Pothole Region of North America, which extends throughout three Canadian provinces and five U.S. states. It is also within Palliser's Triangle and the Great Plains ecoregion. The Fishing Lakes all follow the course of the Qu'Appelle River, which flows from the west to the east and is part of the Hudson Bay drainage basin. The lakes sit in the deep-cut Qu'Appelle Valley that was formed about 14,000 years ago during the last ice age. Meltwater from the glaciers carved out the valley and as water levels rose and fell, alluvium was left in the wake. These piles of alluvium are what created the separations between the lakes.