Eleocharis pusilla is a sedge of the family Cyperaceae that is native to Australia.

The annual herb to grass-like sedge typically grows to a height of 0.02 to 0.15 metres (0.07 to 0.49 ft) and has a tufted habit. It blooms between August and September producing white flowers.

It is found in the Kimberley region of Western Australia where it grows in red loamy-sandy soils around granite.

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