Introduction: – Sex determination is relatively easy if the entire skeleton is available, pelvis and skull are the most reliable bones for this purpose. However, in medico–legal cases one does not always have a complete pelvis or skull. Therefore it is important to be able to assess sex from the other parts of the skeleton also. Sexual dimorphism of maximum length of femur is studied by several workers in different populations.

Aim: – The purpose of the study is to analyze sexual dimorphism of femoral length in populations of coastal areas of Karnataka.

 Materials and methods: – Material for the present study consisted of 100 male (50 of right & 50 of left side) and 100 female (50 of right & 50 of left side) human adult femora from the skeletal collection of Anatomy department, from Karwar Institute of Medical Sciences, Karwar. Results: – After obtaining all measurements unpaired‘t–test’was performed. It shows statistically significant sex difference.

Conclusion: – The present study is very helpful for the sex difference of femur in populations of coastal areas of Karnataka.