Elizabeth Muriel Gregory MacGill (March 27, 1905 – November 4, 1980) was a Canadian engineer and feminist activist who was the first woman in North America to earn an aeronautical engineering degree, the first female aircraft designer in the world, and the first Canadian woman to earn a bachelor's degree in electrical engineering. She was described as the "Queen of the Hurricanes" for her work to produce the Hawker Hurricane aircraft in Canada during the Second World War.