Mark Maclean Coulton (born 3 February 1958) is an Australian politician. He is a member of the National Party and has served in the House of Representatives since the 2007 federal election, representing the Division of Parkes in New South Wales. He has served as Minister for Regional Health, Regional Communications and Local Government (2020–2021), Minister for Regional Services, Decentralisation and Local Government (2019–2020), Assistant Minister for Trade and Investment (2019–2020), Assistant Minister for Trade, Tourism and Investment (2018–2019), and Deputy Speaker of the House (2016–2018).

Coulton was born in Sydney on 3 February 1958,^[2] the son of Jack and Nancy Coulton. He grew up on the family's property in Gravesend, New South Wales. He was educated at Warialda Public School and Farrer Memorial Agricultural High School, where he was a boarder. He returned to the family farm after leaving school and later acquired a property of his own.^[3]

Prior to entering parliament, Coulton was involved in various community organisations, including the Warialda Pony Club, the Warialda Rotary Club, and the local Bush Fire Brigade.^[3] He served as president of the Warialda Pastoral and Agricultural Association, which organised the local agricultural show.^[4] In September 2004, Coulton was elected as the inaugural mayor of Gwydir Shire, a new local government area created from three smaller councils.^[5]

Coulton announced in November 2006 that he would seek National Party preselection for the Division of Parkes. He had previously been the chairman of the party's electoral council for the Division of Gwydir, which was abolished and merged into Parkes.^[6] The incumbent Gwydir MP John Anderson was retiring, while the incumbent Parkes MP John Cobb chose to contest the Division of Calare.^[7]

Coulton was elected to parliament at the 2007 federal election. He served as a shadow parliamentary secretary from 2007 to 2010, and then as the Nationals' Chief Whip in the House of Representatives from 2010 to 2016. After the 2016 election he was elected Deputy Speaker.^[2] He endorsed Michael McCormack for the leadership of the National Party in February 2018, following the resignation of Barnaby Joyce.^[8]

Coulton married schoolteacher Robyn Redford in 1981, with whom he had three children. He also has two brothers, one of whom − John Coulton − is a Gwydir Shire councillor.^[5][3][14]