Francis Brennan was an Australian lawyer and politician. He was a member of the Australian Labor Party (ALP) and served as Attorney-General in the Scullin government (1929–1932). He was a member of the House of Representatives for over 35 years, one of the longest periods of service. His brother Tom Brennan was a United Australia Party senator, a rare instance of family members representing opposing parties.

The attorney-general of Australia (AG) is the minister of the Commonwealth of Australia who is the chief law officer of the government. They are charged with overseeing the national legal affairs and public security as the head of the Attorney-General’s Department. The current attorney-general is Mark Dreyfus, who was chosen by prime minister Anthony Albanese on June 2022 following the 2022 federal election. By convention, the attorney-general is a lawyer.