The genus Achillea (Asteraceae) comprises numerous species with significant medicinal and industrial applications, largely attributed to their diverse phytochemical profiles, including fatty acids. This study investigated the fatty acid composition of Achillea arabica Kotschy and Achillea teretifolia Willd.
collected from three distinct locations in Malatya Province, Türkiye. Plant materials were extracted with n-hexane using a Soxhlet apparatus, and fatty acid methyl esters (FAMEs) were analyzed by gas chromatography with flame ionization detection (GC-FID). A total of 32 fatty acids were identified, with statistically significant (p