Essential oil from flowers, leaves and fruits of Calotropis gigantea (L), was extracted by hydrodistillation method. Total 21 components in leaves, 43 components in flowers and 21 components in fruits were identified. The extracted oil was characterized by GC and GC-MS techniques. Constituents common to flower, leaves and fruit were 3-hexen-1-ol, benzaldehyde, benzyl alcohol, ± linalool, oct-3-en-2-ol, phenethyl alcohol, α- terpineol, 2,4-dimethylacetophenone, 4-vinylguaiacol and n-tetradecane.