Objective: To study the early outcomes of left atrial reduction plasty in patient undergoing mitral valve surgery with giant left atrium. Methods: We surgically excised the redundant left atrial wall in order to reduce the size of giant LA and replaced the mitral valve. Concomitant tricuspid valve repair was also done in patients having significant tricuspid disease. Results: Twelve patients underwent left atrial reduction plasty with mitral and tricuspid valve surgery. There was 48.15% reduction in left atrial size. Postoperatively, 75% regained sinus rhythm from atrial fibrillation. NYHA function was better. One patient was relieved from bronchial compression. There was no complication and no mortality. Conclusion: Left atrial reduction plasty is an effective modality for treating AF in patients of GLA undergoing mitral valve surgery. The restoration and maintenance of sinus rhythm in short term follow up is satisfactory.