Maha Sinnathamby (born 10 December 1939 in Rantau, Malaysia) is an Australian businessman and property developer. He is the entrepreneur behind the Greater Springfield Development in Queensland, the largest master-planned community in Australia. In 2019, Sinnathamby's Springfield City Group was inducted into the Queensland Business Leaders Hall of Fame in recognition of their visionary entrepreneurship in establishing Springfield, as a nation-building project and Australia's first privately-constructed city.