Fimbristylis dictyocolea is a sedge of the family Cyperaceae that is native to Australia.
The rhizomatous perennial grass-like or herb sedge typically grows to a height of 0.5to and has a tufted habit. It blooms between February and June and produces green-brown flowers.
In Western Australia it is found in and around swamps, creeks and pools of water in the Kimberley region.