Saint Arnaud, the French for Saint Arnold, is the name of the following places (all named after Armand-Jacques Leroy de Saint-Arnaud French Minister of War until the Crimean War):
In Algeria Saint Arnaud, former name of El Eulma, Algeria
In Australia St Arnaud, Victoria St Arnaud Box-Ironbark Region, Victoria St Arnaud Range National Park, former name of Kara Kara National Park, Victoria
In New Zealand Saint Arnaud, New Zealand, in the Tasman District Saint Arnaud Range, Tasman District, New Zealand
See also Arnaud (disambiguation)