Williams Lake
- Caddo Parish, Louisiana
- Clackamas County, Oregon
- Grant County, Nebraska
- Kidder County, North Dakota
- Lemhi County, Idaho
- Linn County, Iowa
- List of lakes in Faulkner County, Arkansas
- List of lakes in Logan County, Arkansas
- List of lakes in Miller County, Arkansas
- Miami County, Ohio
- Noble County, Indiana
- Pitkin County, Colorado
- Shelby County, Tennessee
- Williams Lake (British Columbia)
- Williams Lake (Cumberland)
- Williams Lake (Goffs)
- Williams Lake (Halifax)
- Williams Lake (Jeddore)
- Williams Lake (Michigan)
- Williams Lake (New Mexico)
- Williams Lake Indian Reserve
- Williams Lake, British Columbia