Acacia euthycarpa is a shrub or small tree species that is endemic to southern Australia.

It shares its common names of wallowa or reed-leaf wattle with a similar species Acacia calamifolia.

The globular golden flowerheads appear in 2-4 headed racemes between August and October, followed by curved seedpods that are up to 15 cm long.

[2][3] The taxon was first formally described by botanist John McConnell Black in Transactions of the Royal Society of South Australia in 1923 as Acacia calamifolia var.

[1] It occurs from Mount Finke in South Australia and eastward to north-western Victoria.