Margel Ina Harris Hinder AM (4 January 1906, Brooklyn, New York – 29 May 1995, Roseville, New South Wales) was an Australian-American modernist sculptor, noted for her kinetic and public sculptural works. Her sculptures are found outside the Australian Reserve Bank building in Martin Place, Sydney, in a memorial in Newcastle, New South Wales, and in Canberra, ACT. Her work is held in several Australian public collections.