The Cook Ministry was the ninth Australian Commonwealth ministry, and ran from 24 June 1913 to 17 September 1914.

Commonwealth Liberal Party

• Hon Joseph Cook, MP: Prime Minister and Minister for Home Affairs
• Rt Hon Sir John Forrest, GCMG MP: Treasurer
• Hon Paddy Glynn, KC MP: Minister for External Affairs
• Hon William Irvine, KC MP: Attorney-General
• Senator Hon Edward Millen: Minister for Defence
• Hon Littleton Groom, MP: Minister for Trade and Customs
• Hon Agar Wynne: Postmaster-General
• Senator Hon James McColl: Vice-President of the Executive Council
• Senator Hon John Clemons: Minister without portfolio
• Hon Willie Kelly, MP: Minister without portfolio