Acacia nilotica (gum arabic tree, babul, Egyptian thorn, or prickly acacia; called thorn mimosa in Australia; lekkerruikpeul or scented thorn in South Africa) is a species of Acacia (wattle) native to Africa and the Indian subcontinent. It is also currently an invasive species of significant concern in Australia. For the ongoing reclassification of this and other species historically classified under genus Acacia, see the list of Acacia species.
Scented Thorn Acacia is native from Egypt south to Mozambique and Natal through to Pakistan, India and Burma. It has become widely naturalised outside its native range including Zanzibar, and Australia. Acacia nilotica is restricted to riverine habitats and seasonally flooded areas within its native range however in its introduced range it is spread by livestock and grows outside riparian areas