Martha Lake or Lake Martha may be one of several places in the United States:
Populated place Martha Lake, Washington, a census-designated place
Lakes Martha Lake (California), a lake in Kings Canyon National Park Martha Lake (Colorado), a lake in Jackson County, Colorado Lake Martha (Florida) Lake Martha (Minnesota) Martha Lake (Montana), a lake in Flathead County, Montana Lake Martha (South Dakota) Lake Martha (Washington), a lake in Snohomish County, Washington Lake Martha (Utah), a lake near the Brighton Ski Resort area of Big Cottonwood Canyon