In this study, the quantity, structure, and classification of the essential oil obtained from the flowers of Field-grown Marigold (Calendula arvensis L.) individuals grown in the field environment in Maçka District, Trabzon Province, are presented. The essential oil of the collected and dried flowers was obtained using the Clevenger apparatus through the water distillation method. The components of the essential oil extracted from flowers were determined qualitatively using GC-MS/FID (Gas Chromatography-Mass Spectrometry/Flame Ionization Detector). The components that constitute 99.15% of the essential oil of field-grown Marigold have been identified. According to the results obtained, 74 known components were identified in the extracted essential oil from flowers, while only 2 components remained unidentified. The primary components of essential oil have been identified as %26.34 τ-kadinol, %10.99 δ-kadinol, %16.28 δ-kadinen, %8.79 α-thujen, and %6.04 α-pinen, respectively, in the order of their highest concentration. When considering the chemical classification of components identified in the flowers of Calendula arvensis L, sesquiterpenoids were found to be present at the highest proportion, amounting to 42.48%. When terpenes, terpenoids, or their derivatives were evaluated as components, it was found that they constituted 53 compounds and were present at an extremely high level of 93.32% in the essential oil of Calendula arvensis L.