The Division of Mayo is an Australian electoral division located in the East, South, South-East and South-West of Adelaide, South Australia. Established in South Australian redistribution of 3 September 1984, the division is named for Helen Mayo, a social activist and the first woman elected to an Australian University Council. The 9,315 km² seat covers an area from Springton in the North to Goolwa in the South and as far west as the outer eastern suburbs of Adelaide.