Dundarrah is a rural locality in the North Burnett Region, Queensland, Australia. In the , Dundarrah had a population of 4 people.
The Isis Highway enters the locality from the north-west (Coalstoun Lakes) and forms the western boundary of the locality, exiting to the south-east (Ban Ban / Stockhaven). The western boundary of the Mount Walsh National Park in neighbouring Stockhaven forms the eastern boundary of Dundarrah.
The land use is crop growing in the west of the locality with grazing on native vegetation in other parts of the locality.
The Dundarrah cheese factory opened in November 1914. It was the first cheese factory in the Burnett district. It no longer operates.
In the , Dundarrah had a population of 3 people.
In the , Dundarrah had a population of 4 people.
There are no schools in Dundarrah. The nearest government primary school is Coalstoun Lakes State School in neighbouring Coalstoun Lakes to the north-west. The nearest government secondary schools are Biggenden State School (to Year 10) in Biggenden to the north-east and Burnett State College (to Year 12) in Gayndah to the west.