Abildgaardia macrantha, synonym Fimbristylis macrantha, is a sedge of the family Cyperaceae that is native to Australia.
The perennial grass-like or herb sedge typically grows to a height of 0.4to and has a tufted habit. It blooms between January and March and produces brown flowers.
In Western Australia it is found on rocky hills and scree slopes in the Kimberley region where it grows in gravelly lateritic soils.