David Julian Fawcett (born 23 October 1963) is an Australian Liberal Party politician who has been a Senator for South Australia since 2011. Fawcett served in the Morrison Government as Assistant Minister for Defence from 2018 to 2019. Fawcett was previously elected to federal parliament, serving for one term as member for the House of Representatives seat of Wakefield in South Australia, elected at the 2004 election.