Atalaya brevialata is a species of plant in the soapberry (Sapindaceae) family. It is native to northern Australia where it occurs in the Northern Territory.
This species of Atalaya has a perennial woody base with annual herbaceous parts growing to 45 cm above ground. It looks grass-like, but the leaves have pinnate venation.
Atalaya brevialata was first described in 2012 by Ian Cowie and Benjamin Stuckey. The species epithet, brevialata, or "short-winged", refers to the short wing of the samara.
The species is known only from the Elizabeth River valley in Darwin, where it is found near Virginia and west to north-west of Noonamah. It grows in woodland to open woodland on sandy soils amongst Eucalyptus tectifica and Corymbia foelscheana. A map showing where it has been collected is given by the Australian Virtual Herbarium.