Martha Moore Ballard (February 9, 1735 - June 9, 1812) was an American midwife and healer. Unusually for the time, Ballard kept a diary with thousands of entries over nearly three decades, which has provided historians with invaluable insight into frontier-women's lives. Ballard was made famous by the publication of A Midwife's Tale: The Life of Martha Ballard based on her diary, 1785–1812 by historian Laurel Thatcher Ulrich in 1990.