Acacia auriculiformis, commonly known as Auri, Earleaf acacia, Earpod wattle, Northern black wattle, Papuan wattle, Tan wattle, is a fast-growing, crooked, gnarly and thorny tree in the family Fabaceae. It is native to Australia, Indonesia, and Papua New Guinea. It grows up to 30m tall. Acacia auriculiformis has about 47 000 seeds/kg.
This plant is raised as an ornamental plant, as a shade tree and it is also raised on plantations for fuelwood throughout southeast Asia Oceana and in Sudan. Its wood is good for making paper, furniture and tools. It contains tannin usesful in animal hide tanning. In India, its wood and charcoal are widely used for fuel. Gum from the tree is sold commercially, but it is said not to be as useful as gum arabic. The tree is used to make an analgesic by indigenous Australians. Extracts of Acacia auriculiformis heartwood inhibit fungi that attack wood.