Essential oils obtained from the steam distillation of the leaves ofCitrus aurantiumL.,Citrus paradisiMacfad andCitrus sinensis(L.) Osbeck were analyzed by capillary GC and GC/MS. Seventeen components were identified in the leaf oil ofC. aurantium, accounting for 99.03% of the oil. The leaf oil ofC. paradisicontained 45 components thereby accounting for 93.1% of the oil, while that ofC. sinensiscontained 61 components accounting for 86.86% of the total composition. The major components of the leaf oil of bothC. aurantiumandC. paradisiwere linalool (66.1% and 22.9% respectively) while that ofC. sinensishad cis-piperitol (26.4%) as the major component.