Thomas Waddell, an Australian politician, was a member of the New South Wales Legislative Assembly from 1887 to 1917, was briefly the premier of New South Wales during 1904, and was a member of the New South Wales Legislative Council from 1917 to 1934. His 75 days in office marks the shortest tenure of any New South Wales premier.

The premier of New South Wales is the head of government in the state of New South Wales, Australia. The Government of New South Wales follows the Westminster Parliamentary System, with a Parliament of New South Wales acting as the legislature. The premier is appointed by the Governor of New South Wales, and by modern convention holds office by their ability to command the support of a majority of members of the lower house of Parliament, the Legislative Assembly.