Diploglottis macrantha, commonly known as Cape tamarind, is a plant in the lychee family Sapindaceae endemic to Queensland, Australia.

It is a shrub or small tree reaching up to 5 m (16 ft) tall which inhabits rainforest, monsoon forest and gallery forest on Cape York Peninsula.

It was first described` by the Australian botanist Sally T. Reynolds in 1981.

The common name refers to its native region of Cape York.

[4][5] As of October 2024[update], this species has been assessed to be of least concern by the International Union for Conservation of Nature (IUCN) and by the Queensland Government under its Nature Conservation Act.