Donald Jack Hopgood (born 5 September 1938) was an Australian politician and 5th Deputy Premier of South Australia from 1985 to 1992.
Hopgood represented the House of Assembly seats of Mawson from 1970 to 1977 and Baudin from 1977 to 1993 for the South Australian Branch of the Australian Labor Party, and was promoted to the Labor frontbench in 1973.Hopgood was moderator of the Synod of South Australia of the Uniting Church in Australia from 1997 to 1999.