Acacia chamaeleon is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is an openly crowned, sparingly-branched, glabrous shrub with narrowly linear to thread-like or lance-shaped phyllodes with the narrower end towards the base, spherical heads of more or less golden yellow flowers, and linear, firmly papery to thinly leathery pods.

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