Alton Downs Station, most commonly known simply as Alton Downs, is a pastoral lease that operates as a cattle station in north east South Australia.
The property is situated approximately 48 kilometres (30 mi) south west of Birdsville and 253 kilometres (157 mi) north west of Innamincka. It is bordered to the west by the Simpson Desert Regional reserve, to the south by Clifton Hills Station and to the east by Pandie Pandie Station. The station contains many landforms including gibber plains, sand-plains, floodplains, channels and ephemeral rivers. The Warburton River flows through the property southward through Clifton Hills and Cowarie Station then discharging into Lake Eyre.