Abstract The essential oils obtained by hydrodistillation of four Labiatae herbs, namely Salvia crytantha. Montbr. et Auch., Satureja cuneifolia Ten., Thymbra spicata L. and Thymus cilicicus Boiss. et Bal. growing wild in Middle Anatolian provinces of Turkey, were analyzed by GC and GC/MS. Fifty-four compounds were identified in S. cryptantha oil of which camphor (18.1%), 1,8-cineole (17.8%), and bornyl acetate (11.4%) were major. In the oils of S. cuneifolia, 38 compounds were identified, with thymol (43.6â65.5%), carvacrol (4.7â31.2%), γ-terpinene (trace-13.7%) and p-cymene (trace-11.5%) being dominant. Of the 33 compounds identified in T. spicata oil, the main components were p-cymene (22.1%), γ-terpinene (21.4%), carvacrol (21.1%) and thymol (11.8%). The oil of T. cilicicus, which contained 35 constituents, was found to be rich in α-terpineol (16.4%) and camphor (9.7%). Key Word Index: Salvia cryptantha Satureja cuneifolia Thymbra spicata Thymus cilicicus Labiataeessential oil compositionγ-terpinenep-cymene1,8-cineolecamphorα-terpineolbornyl acetatethymolcarvacrol