Gregory Gane Cornwell AM (born 19 June 1938), former Australian politician, was a member of the unicameral Australian Capital Territory Legislative Assembly elected to the multi-member single constituency Assembly and later elected to represent the multi-member electorate of Molonglo for the Liberal Party. Cornwell also served in the elected ACT House of Assembly (a predecessor to the ACT Legislative Assembly), representing the electoral district of Fraser, from 1975 until 1986 for the Liberal Party.