Abstract The chemical composition of the essential oil obtained from the aerial parts of Nepeta asterotrichus Rsch. F. et Aell. was examined by using GC and GC/MS. Among the 15 components identified in this oil, terpinen-4-ol (22.8%), 1,8-cineole (17.4%), 4aÎ² 7a, 7aÎ²-nepetalactone (14.8%), linalool (12.5%) and Î³-terpinene (10.6%) were found to be the major constituents.