Abstract Essential oils, hydrodistilled from the leaves and flowers of Cunila galioides Benth. collected in Rio Grande do Sul and Santa Catarina, Brazil, were analyzed by GC and GC/MS. The main compounds in the oil of flowering plants of sample A were geranial (44.3%), neral (33.6%) and geranyl acetate (5.2%). In sample B, (E)-Î²-ocimene (46.6%), geranial (10.3%), linalool (9.3%) and neral (7.5%), were the main constituents. Key Word Index: Cunila galioides Lamiaceaeessential oil compositiongeranialneral(E)-Î²-ocimene