The essential oils from the leaves, flowers and roots of cultivated Alpinia speciosa K. Schum. were examined by capillary GC and GC-MS. Monoterpenoids composed 89.6% of the total identified constituents of the leaf oil, out of which 59.3% were oxygenated, represented mainly by terpinen-4-ol (28.4%) and 1,8-cineole (19.2%). The flower and leaf oils had a uniform qualitative, but different quantitative composition. However, the flowers oil was also dominated by oxygenated monoterpenoids (68.9%) viz., terpinen-4-ol (26.0%), 1,8-cineole (24.4%) and linalool (6.1%), along with the monoterpene hydrocarbon, sabinene (11.3%). On the contrary, the root oil had an entirely different composition and was characterized by endo-fenchyl acetate (40.1%), 1,8-cineole (11.8%), camphene (7.8%), bornyl acetate (6.9%) and borneol (5.8%). Moreover, endo-fenchyl acetate, exo-fenchyl acetate and endo-fenchol were characteristic of only the A. speciosa root oil.