The Australian states each elected three members of the Australian Senate at the 1903 federal election to serve a six-year term starting on 1 January 1904.

Each elector voted for up to three candidates.

There were four vacancies in Victoria due to the death of Sir Frederick Sargood.

Robert Reid (Free Trade) had filled the seat in the interim, with the fourth senator elected serving the balance of Sargood's term ending on 31 December 1906.

Each elector voted for up to three candidates.