Uvaria concava, commonly known as calabao, is a plant in the custard apple family Annonaceae found throughout tropical Asia, from India to the Northern Territory and Queensland in Australia.

It is a tall vine with a stem diameter up to 5 cm.

[4][5] This species is listed as least concern under the Queensland Government's Nature Conservation Act.

[1] As of 23 June 2024[update], it has not been assessed by the International Union for Conservation of Nature (IUCN).