French Farm Lake is a lake in Wawatam Township in Emmet County in the U.S. state of Michigan. 802 acres in size, it is located approximately 2.7 miles southwest of Mackinaw City, Michigan. It is the northernmost lake of Michigan's Lower Peninsula. It is served by the North Country Trail from Mackinaw City and by local dirt roads. The lake's name may be derived from a frontier farm cultivated on the lakeshore in the 18th century. The farmstead, which supplied food to Fort Michilimackinac, was excavated by archaeologists in 1981-1982. A monograph was published.