Abstract The composition of the essential oils of leaves and fruits of Cupressus arizonica Greene was analyzed by GC and GC/MS. The main constituents of the leaf oil were α-pinene (19.2%), cis-muurola-4(14),5-diene (10.0%), β-phellandrene (9.6%) and sabinene (8.1%). Major components of the fruit oil were α-pinene (57.6%), camphene (10.1%), β-pinene (7.2%), sabinene (3.7%) and p-cymene (3.7%).