The essential oils from the three recently defined species of Neofabricia, viz. N. myrtifolia, N. mjoebergii and N. sericisepala have been investigated. The oils of all three species were found to be terpenoid in character. N. mjoebergii was principally sesquiterpenoid in character with caryophyllene and humulene being the major components along with α-pinene. N. sericisepala contained over 50% of α-pinene but the next most abundant compound was caryophyllene. N. myrtifolia appeared to exist in two chemical forms, one of which contained α-pinene at over 60% as the major component and lesser amounts of caryophyllene, while the second form contained only small amounts of α-pinene and larger amounts (up to 60%) of caryophyllene. The volatile oil data were subject to multivariate numerical analysis, the results of which support a recent morphologically-based taxonomic revision of the genus. These data also support the segregation of Neofabricia from Leptospermum.