Sage (Salvia officinalis L.) and thyme (Thymus vulgaris L.) are perennial shrub and aromatic plants belongs to Lamiaceae family, native to Mediterranean Basin. Thyme and sage contain are mixture of monoterpenes. The aim of this study was to identification of the components of Sage and thyme cultivated in Isfahan climatic conditions. The aerial parts of plants were collected in Isfahan (Mymeh) Province in 2011. The aerial parts of plants analyzed by using GC/MS in Islamic Azad University Khorasgan (Isfahan). The 19 and 31 compounds were identified in dried aerial parts thyme and Sage, respectively. The results obtained in our study showed that major components thyme were; γ-Terpinene (42.35%), Thymol (14.18%), α-Thujene (10.74%), linalool (5.42%), Caryophyllene (2.942%), borneol (2.48%) and Carvacrol (1.07%). The major components sage were; Camphor (17.75%), Thujone (13.25%), 1,8-Cineole (13.03%), α-pinene (6%), β –Thujone (5.85%), α-Humulene (5.48%), β-Caryophyllene (5.07%) and borneol (3.72%). Variation in constitution can be due to both environmental and genetic factors.