The chemical composition of the essential oil from the leaves of Pseudobrickellia brasiliensis (Asteraceae) from the Brazilian Cerrado was analyzed by GC/FID and GC/MS. Thirty-four out of thirty-eight components detected were identified. Major compounds in the oil were terpinen-4-ol (38.6%), Î³-terpinene (19.5%), Î±-terpinene (7.8%) and Î±-terpineol (4.5%).