Ruby Florence Hammond PSM (1936 - 16 April 1993) was an Australian Indigenous rights campaigner and the first Indigenous South Australian to seek election to the Federal Parliament. Hammond was born in 1936 in Blackford, an independent Aboriginal community on the south-east coast of South Australia, and was a member of the Tanganekald group of the Ngarrindjeri people of the Coorong. Ruby obtained school certificate in 1952 but the tough conditions at work in a shop made her touch racism against her.