The shape of the nose is a signature indicating the ethnicity, race, religion and sex. The nasal index proportion(length/width) is important in aesthetic and reconstructive surgery.The nasal index values are known to vary with age. Adolescence is divided into three phases out of which the late phase (17–19) is the most crucial phase of development.The present study carried out in 400 healthy(200 males;200 females) medical students (age group 17–19) provides the morphometric criterion and investigates the dimorphic potential for the nasal index.The results indicate that the nasal dimensions have a dimorphic predisposition(‘p’<0.001) which should be considered to achieve better surgical outcomes. The mean value of nasal index for males and females came out to be 71.15+6.51. This value is very near to the leptorrhinerange.Indians are generally considered Caucasians and hence the proximity to the leptorrhine range. While it is an established fact that Indians are closer to Caucasians compared to other groups there is no doubt that Indians are one of the most divergent Caucasoid groups in circulation.