Stewarton is a rural locality in the Central Highlands Region, Queensland, Australia. In the , Stewarton had a population of 52 people.
Two railway lines in the Blackwater railway system enters the locality from the north with the first exiting to the west and the second terminating in the centre of the locality. The locality is served by a number of railway stations. On the first line are:
On the second line are:
In the , Stewarton had a population of 39 people.
In the , Stewarton had a population of 52 people.
There are no schools in Stewarton. The nearest government primary and secondary schools are Blackwater State School and Blackwater State High School, both in neighbouring Blackwater to the north.
Despite the name, Blackwater Airport is at 18837 Capricorn Highway in Stewarton ().