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The essential oil aerial parts of Nepeta baytopii Hedge and Lamond., Nepeta cataria L. and Nepeta fissa CA Mey. were investigated by GC and GC-MS. The yield of oils are ca. 0.40, 0.45 and 0.50 mL/100 g, respectively. Forty six, fourty seven and forty nine compounds were identified representing 92.4, 91.2 and 92.5% of the oil, respectively. 1, 8-Cineole (23.2%) and nepetalactone (12.8%) in N. baytopii, nepetalactone (27.5%)-1, 8-cineole (10.8%) and germacrene D (9.2%) in N. cataria, 1, 8-cineole (24.3%) and nepetalactone (17.6%) were identified as major components in N. fissa. The chemical distribution of the essential oil compounds in the genus pattern were discussed in means of chemotaxonomy.