ABSTRACT Atrial septal defect (ASD) transcatheter occlusion techniques are now established as the preferred method and have become an alternative to surgery under extracorporeal circulation. In this study, we aimed to present our emergency surgical approach to an unusual case of device embolization to left ventricle due to migration of the ASD occluder. The diagnosis was made via transthoracic echocardiography postprocedure. No early or late complication was seen. Transesophageal echocardiography (TEE) examinations showed no residual interatrial shunting. Transcatheter occlusion of secundum-type ASD has drawbacks, such as distal migration and residual shunts. Consequently, we think that unfavorable anatomy (deficient or floppy rim, septal malalignment) and device diameter are major issues in device migration. Careful follow-up and TEE monitoring perioperatively can lead to successful management of such cases. How to cite this article Kumar S, Kumar A, Dutta V. Unusual Embolization of Atrial Septal Defect Device in Left Ventricle and its Successful Retrieval. J Perioper Echocardiogr 2016;4(2):67-69.