Abstract Water-distilled essential oils from the aerial parts of Tanacetum densum (L.) Heywood ssp. sivasicum Hub.-Mor. et Grierson from Turkey were analyzed by GC and GC/MS. Tanacetum densum ssp. sivasicum flower and stem oils were characterized with 1,8-cineole (21.1% and 28.3%, respectively), camphor (19.2% and 16.4%, respectively), and borneol (5.8% and 6.4%, respectively).