The Association of Heads of Independent Girls' Schools (AHIGS), is an association for independent girls' schools, based in North Ryde, New South Wales, Australia. Established in 1916 as The Association of Head Mistresses of New South Wales, the Association rebranded in 2021 to now trade as Independent Girls' Schools Association (IGSA). The Association, that as of 2022, comprised 32 member schools, enables inter-school aesthetic, cultural and sporting activities between New South Wales and the Australian Capital Territory's most exclusive independent and Catholic girls' schools.