The operative goals of the repair of postinfarction left ventricular aneurysms are to correct the size and geometry of the left ventricle in order to reduce wall tension and paradoxical movement and to improve the systolic function. Endoventriculoplasty has become the gold standard, since the late 1980s when it was described by Jatene and modified by Dor et al. Endoventriculoplasty using autologous endocardium for left ventricular aneurysm was first described by Grandjean et al. We present here a case report of on-pump beating heart endoventriculoplasty using autologous endocardium for post-infarction left ventricular anterior aneurysm. This technique, as a modification of the Dor technique, restores the ventricular geometry without leaving any segment of non-contractile ventricular wall and avoids the usage of prosthetic materials.