Margaret Lake could refer to:
Lakes and reservoirs Lake Margaret Dam, a dam and reservoir in Australia Margaret Lake, Alberta, location of the Margaret Lake Airport, Alberta, Canada Margaret Lake, Manitoba, a lake on the Winnipeg River, Manitoba, Canada Margaret Lake (Glacier County, Montana) Margaret Lake (Kittitas County, Washington)
People Margaret Lake, real name of British astrologer Mystic Meg (1942–2023) Maʻiki Aiu Lake (1925–1984), a hula dancer and influential figure in the second Hawaiian Renaissance