Abstract The essential oils of leaves, branches and female cones of Cupressus arizonica Greene from Italy have been analyzed by means of the complementary techniques of GC, GC/MS and 13C-NMR. The main constituent of the leaf oil was umbellulone (45.1%), while in the branch and cone oils it was Î±-pinene (74.6% and 72.0%, respectively). The composition of the oils of branches and female cones have not been previously reported.