Sundown is a rural locality in the Southern Downs Region, Queensland, Australia. It is on the Queensland border with New South Wales. In the , Sundown had "no people or a very low population".
Most of the locality is within the Sundown National Park and the Sundown Resources Reserve. Apart from these protected areas, the remaining land in the north-east of the locality is used for grazing on native vegetation.
Sundown has a heritage-listed site:
In the , Sundown had "no people or a very low population".
In the , Sundown had "no people or a very low population".
There are no schools in Sundown. The nearest government primary schools are Ballandean State School in neighbouring Ballandean to the east, Greenlands State School in Greenlands to the north-east, and Texas State School in Texas to the west. The nearest government secondary schools are Texas State School (to Year 10) and Stanthorpe State High School (to Year 12) in Stanthorpe to the north-east.