Peel and leaf oils of 35 mandarin cultivars, belonging to five different species, were obtained from fruits and leaves collected on mandarin-trees kept at the same pedoclimatic and cultural conditions. Their chemical composition was investigated by capillary GC, GC-MS and 13C-NMR and the results were submitted to a statistical analysis. Two major chemotypes, limonene and limonene/y-terpinene, were distinguished for peel oils, while five chemotypes, linalool, sabinene/linalool, β-pinene/linalool, γ-terpinene and methyl N.methylanthranilate, were observed for leaf oils. The results were compared with those already reported by our groups