A case of double Interior Vena Cave (IVC) where left sided IVC is of the dimensions of normal IVC and the right one is much smaller is reported. Various anomalies of IVC were studied to find out if such a defect is previously recorded. 1 Double IVC, as such, is a rare anomaly .It occurs in 0.2- 2 0.5% of cases . Left sided IVC is reported where right IVC is absent. What makes our case unusual is that both right & left IVC were seen. But, left IVC had proportions & tributaries of normal IVC while, right IVC was much smaller. We did not find such a case reported any where previously.