Frederick William Gershaw (11 April 1883 – 26 June 1968) was a Canadian physician and politician. Born in Emerson, Manitoba, he received a Doctor of Medicine from the University of Manitoba in 1911. He became a medical officer for the Canadian Pacific Railway and moved to Medicine Hat, Alberta. In 1912, he married Harriet Robinson, a registered nurse. They had 4 daughters: Margaret, Edith, Norma, and Lorraine.