Abstract : Breast reconstruction using autologous flap reconstruction is more feasible in many developing countries. Among these autologous flap procedures is perforator flap. LICAP, TDAP, and SEAP have been used for several years in many cases in our institution. The new approach for volume and defect replacement is breast sharing flap. This reconstruction flap procedure uses the Internal Mammary Artery Perforator (IMAP). We report two cases. The first is the case of A 35-years-old with 6 cm in diameter wound on her lower medial quadrant right breast after right inferomedial quadrant mastectomy. The second is a case of a patient diagnosed breast cancer on her superomedial right breast. In the first case, mammary perforator of true 5th intercostal was used. The flap was generated from the mastopexy contralateral side. IMAP at the level of 5th intercostal space was further dissected and turned over to the acceptor side. The second patient underwent breast sharing flap using IMAP SIC 2nd level. The procedure began with excision of the right breast tumor followed by dissection of the flap from her left breast. Then, the 2nd IMAP was also identified with doppler ultrasound intraoperative. The size of the flap measurement is half of the size of the right breast defect. The postoperative follow-up showed a good result in the volume and shape despite some minor scarring issues. Breast sharing flap is one alternative for reconstruction of the medial breast tumor and can be used for volume replacement and closing the defect