Sir Walter Massy-Greene KCMG was an Australian politician and businessman. As a Liberal and Nationalist member of the House of Representatives, he became a protégé of Prime Minister Billy Hughes and was groomed as his successor. He served as Minister for Trade and Customs (1919–1921), Defence (1921–1923), and Health (1921–1923), but his prime ministerial aspirations were brought to an abrupt halt by his defeat at the 1922 federal election. Massy-Greene subsequently served two terms as a Senator for New South Wales, but never regained his earlier influence in politics. In retirement he held numerous company directorships.

The Minister for Trade and Tourism is a portfolio in the Government of Australia, falling within the Department of Foreign Affairs and Trade (DFAT). The position is currently held by Senator Don Farrell, sworn in as part of the Albanese ministry on 1 June 2022, following the Australian federal election in 2022. The minister is assisted by the Assistant Minister for Trade, held by Senator Tim Ayres.