The Barton ministry (Protectionist) was the 1st ministry of the Government of Australia. It was led by the country's 1st prime minister, Sir Edmund Barton. The Barton ministry was formed on 1 January 1901 when Federation took place. The ministry was replaced by the First Deakin ministry on 24 September 1903 following Barton's retirement from Parliament to enter the inaugural High Court.

The Protectionist Party, also known as the Protectionist Liberal Party or Liberal Protectionist Party, was an Australian political party, formally organised from 1887 until 1909, with policies centred on protectionism. The party advocated protective tariffs, arguing it would allow Australian industry to grow and provide employment. It had its greatest strength in Victoria and in the rural areas of New South Wales. Its most prominent leaders were Sir Edmund Barton and Alfred Deakin, who were the first and second prime ministers of Australia.