Elizabeth Hager ( 1750 or 1755 – 12 July 1843), known as Betsy or Betsey, was an American farmer and blacksmith who prepared weapons used in the early stages of the American Revolution. Betsey Hager had worked for a blacksmith and farmer named Samuel Leverett in Massachusetts. After the Battle of Concord, she noticed cannons that had been abandoned by the British. They were brought to Leverett's smithy, repaired, and subsequently used by the American forces. At the smithy, Hager repaired firearms and prepared ammunition. She also tended to the sick and wounded and was said to be proficient at using herbal remedies.