Abstract The oil obtained by hydrodistillation of the aerial parts of Satureja atropatana Bung., endemic in Iran, and S. mutica Fisch. et C.A. Mey. was analyzed by GC/MS. Thirty-seven compounds representing 99.3% of the oil of S. atropanata were identified, among them carvone (21.5%), menthol (18.1%), 1,8-cineol (13.1%), methyl chavicol (11.1%) and menthone (10.5%) being the major ones. The oil of S. mutica was characterized by higher amount of menthol (37.4%), menthone (17.2%) and 1,8-cineol (9.3%) among the 39 components comprising 95.1% of the total oil detected. Both oils were richer in oxygenated monoterpenes than sesquiterpenes. Key Word Index: Satureja atropatana Satureja mutica Lamiaceaeessential oil compositionmentholcarvonementhone1,8-cineolmethyl chavicol