Greenswamp is a rural locality in the Western Downs Region, Queensland, Australia. In the , Greenswamp had a population of 77 people.
The locality is bounded to the south-east by the Condamine River. The elevation ranges from with lower land nearer the river and the higher land to the north.
The land use is a mixture of grazing on native vegetation on the hilly land and growing crops on the flatter lower land.
Fairy Meadow Road State School opened on 5 November 1915. It closed in 1919. It was on the northern side of Greenswamp Road (approx ).
Green Swamp State School opened circa 1936. It closed in 1950.
In the , Greenswamp had a population of 40 people.
In the , Greenswamp had a population of 77 people.
There are no schools in Greenswamp. The nearest primary and secondary schools are Chincilla State School and Chinchilla State High School in neighbouring Chinchilla to the east.