Abstract The chemical composition of the essential oil extracted from the aerial parts of Ajuga chamaepitys (L.) Schreber ssp. chamaepitys has been studied by GC and GC/MS. Thirty-six compounds were identified and Î³-muurolene (40.3%), limonene (20.5%) and germacrene B (7.8%) were found to be the major constituents of the oil. Key Word Index: Ajuga chamaepitys ssp. chamaepitys Lamiaceaeessential oil compositionÎ³-muurolenelimonenegermacrene B