Feverfew (Tanacetum parthenium L.), which belongs to the family Asteraceae, is a perennial herbaceous plant with small flowers like chamomile. In this study, we investigated the essential oil composition of Tanacetum parthenium collected from Gumushane Province, Turkey. Forty-four components representing 86.04% of the oil were identified in the essential oil of aerial parts of T. parthenium obtained by hydrodistillation and examined by GC and GC-MS. The main component of the sample was camphor (39.47%), followed by guaiol (5.21%), caryophyllene oxide (3.91%), bornyl acetate (3.09%), (E)-verbenol (2.68%), camphene (2.29%) and α-cadinol (2.12%). Presence of camphor highlighted the potential of this plant as a drug source in the alternative medicine due to its antiseptic, antipruritic, aphrodisiac, contraception and lactation suppressant effects. Guainol was found in this study for the first time in T. parthenium. In addition, other important finding was the lack of trans- chrysanthenyl acetate in our T. parthenium sample.