Hedley Grant Pearson Chapman (born 27 April 1949) is an Australian politician.
Born in Adelaide, South Australia, Chapman was educated at Prince Alfred College[2] and the University of Adelaide and worked as a marketing executive in the oil industry and a self-employed management consultant prior to gaining Liberal Party pre-selection for the federal Division of Kingston in the House of Representatives leading to his election in Malcolm Fraser's 1975 landslide win.
Chapman expressed opposition to the development of the Franklin River Dam.
"[4] Chapman unsuccessfully sought preselection for the new seat of Mayo in 1984,[5] and unsuccessfully contested the state electorate of Fisher at the 1985 state election, but returned to federal politics in 1987 as a member of the Australian Senate representing South Australia.
Chapman is the joint-owner of the long-term lease over Wallerberdina Station, which is one of three properties short-listed for the prospective development of nuclear waste storage facility in South Australia.