Wonbah is a rural locality in the Bundaberg Region, Queensland, Australia. In the , Wonbah had a population of 78 people.
Wonbah Knob is in the east of the locality (), rising to above sea level.
The land use is predominantly grazing on native vegetation with some crop growing.
In 1887, of land were resumed from the Wonbah pastoral run. The land was offered for selection for the establishment of small farms on 17 April 1887.
In the , Wonbah had a population of 98 people.
In the , Wonbah had a population of 78 people.
There are no schools in Wonbah. The nearest government primary school is Mount Perry State School in neighbouring Mount Perry to the south. The nearest government secondary school is Gin Gin State High School in Gin Gin to the north-east; however, it may be too distant for students living in the west of Wonbah with the alternatives being distance education and boarding school.