Wallangarra is a town and locality in the Southern Downs Region, Queensland, Australia. It is the third most southerly town in Queensland, 258 kilometres (160 mi) south west of Brisbane. Wallangarra is on the Queensland side of the border and Jennings is on the New South Wales side. At the 2006 census, Wallangarra had a population of 385.
In 1885, the Queensland Government announced that a town would be formed where the railway line between Queensland and New South Wales would meet. On 29 June 1885, 179 lots were offered for sale at £8 per acre (£20/ha).