Tennant Creek was an electoral division of the Legislative Council in Australia's Northern Territory.
The electorate, named after the town of Tennant Creek, was one of the original single-member seats at the Legislative Council's formation in 1947, with Victor Webster elected as the seat's first member.
On 17 May 1950, Webster resigned after losing his job as a medical officer with the federal Department of Health when the Chifley government was defeated at the 1949 federal election, and having to leave the Territory.
On 16 November 1950, Administrator Arthur Driver appointed John Higgins as his replacement, ignoring Charles Priest who had contested the seat against Webster at the 1949 election.
At the 1958 by-elections, Tennant Creek was the only seat contested, with Purkiss re-elected with an increased majority.