Canyon Lake is a city and gated community in Riverside County, California, United States, located on Canyon Lake reservoir. Canyon Lake began as a master-planned community developed by the Corona Land Company in 1968. The City of Canyon Lake was incorporated on December 1, 1990. Railroad Canyon Dam was built in 1927, and impounds the San Jacinto River to fill the reservoir, which covers 383 acres (1.55 km2) and has 14.9 miles (24.0 km) of shoreline.

The city of Canyon Lake is named after the reservoir it is built around. Initially, the reservoir was known as Railroad Canyon Reservoir, or Railroad Canyon Lake, but now the reservoir and the community are referred to by the shortened form, Canyon Lake.