Acacia equisetifolia is a small shrub in the genus Acacia. It is endemic the Northern Territory, and is critically endangered under the Commonwealth Environment Protection and Biodiversity Conservation Act 1999, being known only from Graveside Gorge in the Kakadu National Park, where it grows on sandstone slopes and ledges at the tops of sheer cliffs. It flowers in February, with near-mature pods observed as being present in March, August and October.

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