Styrax benzoin is a species of tree native to Sumatra in Indonesia. Common names for the tree include gum benjamin tree; loban (in Arabic); kemenyan (in Indonesia and Malaysia); onycha; and Sumatra benzoin tree.

Benzoin resin; a dried exudation from pierced bark; is currently produced from various Styrax species native to Sumatra; Java; and Thailand. Commonly traded are the resins of S. tonkinensis (Siam benzoin); S. benzoin (Sumatra benzoin); and S. benzoides. The name 'benzoin' is probably derived from Arabic luban jawi (???? ????; 'Javan frankincense'); compare the obsolete terms 'gum benjamin' and 'benjoin'. This incidentally shows that the Arabs were aware of the origin of these resins; and that by the late Middle Ages at latest international trade in them was probably of major importance.