Abstract The essential oil of Teucrium persicum Boiss. was obtained by hydrodistillation of the aerial parts of the plant and analyzed by GC and GC/MS. Eighty-one components representing 93.5% of the total oil were identified. The main components of the oil were caryophyllene oxide (10.6%), Î±-pinene (9.4%), geranyl linalool (7.8%), Î³-cadinene (7.4%), elemol (6.9%) and Î±-cadinol (5.5%).