The antibacterial activity of essential oils and their derivatives has been recognized for a long time. In the present study, the chemical composition and the antibacterial properties of the essential oils obtained from the aerial parts of the four Lamiaceae species, wild oregano (Origanum minutiflorum) (endemic in Turkey), oregano (Origanum onites), black thyme (Thymbra spicata) and wild savory (Satureja cuneifolia), with commercial importance in Turkey, were evaluated.