Phyllis Ann Fox (born 1923) is an American mathematician and computer scientist.Fox was raised in Colorado. She did her undergraduate studies at Wellesley College, earning a B.A. in mathematics in 1944. From 1944 until 1966 she worked for General Electric as an operator for their differential analyser project. She earned a second baccalaureate, a B.S. in electrical engineering, from the University of Colorado in 1948.