Term of government (1915–1923) Ministries Elections

It was led by the country's 7th Prime Minister, Billy Hughes.

The Fourth Hughes ministry succeeded the Third Hughes ministry, which dissolved on 8 January 1918 following the resignation of Hughes as prime minister after a vote of no-confidence within the Nationalist Party in the wake of a failed second referendum on conscription.

However, due to a lack of alternative leaders, Hughes was immediately re-commissioned as prime minister by Governor-General Sir Ronald Munro Ferguson.

[1] Walter Massy-Greene, who died in 1952, was the last surviving member of the Fourth Hughes ministry.