David Christopher Bushby (born 17 July 1965) is an Australian diplomat and former politician who served as a Senator for Tasmania from August 2007 to January 2019, representing the Liberal Party.

He was educated at the University of Tasmania, where he graduated in economics and law, and the Australian Maritime College, from where he received a diploma in business.

[2] Consequently, Bushby appeared destined to enter the federal parliament at the beginning of the next Senate term in July 2008 given the highly electable nature of this position on the ticket.

On 30 August 2007, Bushby was appointed to the Senate by the Tasmanian parliament to fill the casual vacancy caused by the resignation of Paul Calvert.

[5] The Tasmanian Liberals preselected his sister Wendy Askew as his replacement in the Senate; she served the remainder of his six-year term, which expired in June 2022.