The wild Cymbopogon martinii collected from Devarayana Durga Hill was subjected to study the chemical composition of the essential oils. The Hydro-distillation method was used to extract the Essential oil from the leaf and was subjected to GC/MS analysis. The Essential oil yield obtained from hydro-distillation method was 0.5% v/w and a total of 65 Compounds were identified. Out of 65 compound Geraniol (20.31%) was found as the major component whereas Geranyl acetate was found to be second highest constituent which was 15.19%, followed by Nerol (15.18%), Camphene (9.31%), Borneol (8.05%), D-limonene (6.05%), Cubenol (6.88%) and Linalool (5.14%).