St Arnaud /səntˈɑːnəd/ is a town in the Wimmera region of Victoria, Australia, 244 kilometres north west of the capital Melbourne.

[2] It is named after French marshal Jacques Leroy de Saint Arnaud, commander-in-chief of the army of the East.

The town features many well-preserved historic buildings which line the main thoroughfare of Napier Street, including a generous collection of pubs.

A number of attractive gardens exist in town, including Pioneer Park (believed to be Australia's only remaining public park designed by Edna Walling), the Queen Mary Botanic Gardens, the Market Square gardens adjacent to the council offices and Lord Nelson Park which offers sporting facilities as well as attractions such as the old Lord Nelson Mine and views from Wilsons Hill.

The heritage listed 1878 St Arnaud Railway Station received a $1M upgrade in September 2019, to provide a permanent public gallery and a hub for arts, a marketspace for local artists and producers, artists' library and lounge and a community space for lectures and workshops.

St Arnaud today is a secondary service base for the Shire of Northern Grampians, while the headquarters are in Stawell.

The town began an annual festival in 1996, which is held in November every year and includes events such as music concerts, market day, Gopher Grand Prix and numerous exhibitions and displays.

The St Arnaud Netball Club competes in the North Central Football League against other surrounding towns.

[9] Affiliated with the Australian Clay Target Association, the St Arnaud Gun Club hosts down-the-line shoots each month (except January).

The B220 heads north to Donald and south to Avoca, while the Wimmera connects St Arnaud to Horsham in the west and Bendigo in the east.