Hydrodistillation of dried and wet of Stachys byzantina C.Koch. (Lamiaceae) yielded 0.1% and 0.08 % (v/w) essential oils, respectively. GC-MS analysis allowed identification of 37 components, which made up 93.2% of the total oil from the dried sample, and 20 compounds (96.1%) were identified in the wet aerial part of plant.