Abstract The essential oil of Dicyclophora persica Boiss. growing wild in Iran was obtained by hydrodistallation and analyzed by GC and GC/MS technique. Fifty-four components representing 89.0% of the total oil were identified. The main components of the oil were Ï-cymene (13.6%), Î±-pinene (13.4%), Î±âphellandrene (9.4%) and (Z)-falcarinol (5.0%).