Abstract The composition of the essential oil of aerial parts of Micromeria kosaninii Å ilic, Micromeria parviflora (Vis.) Re-incheb. and Micromeria juliana (L.) Benth. ex Reich was analyzed by GC and GC/MS. One hundred and twenty-four compounds were identiified in M. kossaninii oil, 143 in M. parviflora oil, and 111 in M. juliana oil, accounting for more than 96.0%, 97.5% and 97.9% of the total oils, respectively. Sixty-three compounds were common for all three oils. The major constituents of both M. kosaninii and M. juliana oils were borneol (8.2% and 9.3%, respectively), isomeric verbenols (11.7% and 8.7%) and furanoid linalool oxides (9.8% and 6.5%). The oil of M. parviflora was marked by a high content of the main constituent spathulenol (29.9%).