The leaf essential oils ofJuniperus oxycedrusL. subsp.oxycedrus,subsp.badia(H. Gay) Debeaux and subsp.macrocarpa(Sm.) Ball have been analyzed by GC/MS. One hundred twenty two compounds were found in these three subspecies. The leaf oils of J.oxycedruswere dominated by α-pinene (25–43%), and limonene (4.5–28%), with moderate amounts of β-pinene, myrcene, p-cymene, β-phellandrene and manoyl oxide, whereas the leaf oils of J.oxycedrussubsp.badiawere dominated by α-pinene and germacrene D with variable amounts of manoyl oxide and moderate amounts of α-campholenal, β-bourbenene and several unknown sesquiterpenes. The oils of subsp.badiacontained nine unknown sesquiterpenes that were only found in this taxon. The oil of subsp.macrocarpawas dominated by sabinene and α-pinene with moderate amounts of p-cymene, γ-terpinene and terpinen-4-ol. Chemically, the three subspecies appear to be distinct and this warrants the continued recognition of these subspecies.