Convolvulus persicus L. (Convolvulaceae) is distributed in the Southern coasts of Caspian Sea. The aerial parts of this species were collected from Sari (Mazandaran, Iran) in July 2012. The chemical composition of the essential oil obtained by hydrodistillation of the aerial parts of C. persicus was investigated by GC and GC-MS. Twenty components, representing 89.0 % of the total oil, were characterized with β- caryophyllene (47.0 %), dodecanal (8.8 %), caryophyllene oxide (5.7 %), tetradecanal (4.4 %) and dihydroedulan I (4.4 %) as the major components. This is the first report on the analysis of the essential oil from a species of Convolvulus genus
