The remnants of left venous valve of sinus venosus are rarely noticed in the interior of right atrium. The remnants can be seen attached to the floor of fossa ovalis. The incidence of remnants of left venous valve was studied in 50 cadaveric hearts utilised for undergraduate teaching programme. The right atrium was opened and the interior was studied for the presence of these embryological remnants. The incidence of remnants of left venous valve is 12% in the present study. It was seen either inform of membranous structure or fibrous strands attached to the fossa ovalis. This anomaly may give rise to complications like thromboembolism or difficulty during important surgical procedures of the interatrial septum. So knowledge regarding the incidence, morphology and complications of this embryological remnant is mandatory. Keywords: Fossa ovalis, left venous valve, right atrium, sinus venosus, cadveric hearts.