Isolepis aucklandica is a species of flowering plant in the Cyperaceae family.

It is native to New Zealand, Australia, Argentina, Peru, Colombia, Ecuador, Macquarie Island, the French Southern Territories of Saint Paul and Amsterdam Islands, and New Guinea.

[2] It is a creeping, bright green, leafy, rhizomatous sedge which forms large patches of turf.

The shining nut is 1–2 mm long by about 0.5 mm wide, triangular in cross-section with rounded angles, almost white to yellowish, or grey- to red-brown, and it tapers towards its black tip.

[4] It is found on the coast and up to 1300 m altitude, in boggy ground in forests and wetlands and seepages.