Abstract The essential oil of the aerial parts of Astrodaucus orientalis (L.) Drude. from Iran was isolated by hydrodistillation. The oil was analyzed by GC/MS. Of the 51 components detected, 40 (amounting to 95.6%) were identified. The dominant components were Î±-pinene (32.7%), Î±-fenchyl acetate (14.5%), Î²-pinene (8.5%) and bornyl acetate (7.9%).