Abstract Essential oils of leaf and fruit of Pittosporum viridiflorum var. viridiflorum growing in Madagascar were analyzed by GC and GC/MS. The leaf oil, which was sesquiterpene-rich, contained δ-cadinene (10.6%) and α-cadinol (18.3%) as major components. The fruit oil contained aliphatic as well as mono- and sesquiterpenoid compounds with sabinene (13.2%), decanal (10.3%) and β-elemene (9.5%) as major components. The antimicrobial activity of the oils was also determined. Key Word Index: Pittosporum viridiflorum var. viridiflorum Pittosporaceaeessential oil compositionδ-cadineneα-cadinolsabinenedecanalantimicrobial activity