Multilocular peritoneal inclusion cysts (MPICs) are neoplasm composed of multiple small cysts filled with serous fluid. It is well defined but rare entity, predominantly in women of reproductive age group. MPICs are cysts of peritoneum or postoperative peritoneal cysts, benign cystic mesothelioma, inflammatory cyst. They have been referred to as multilocular peritoneal inclusion cysts (MPICs). Herewith we are reporting two cases of MPICs, both were belonged to reproductive age group and clinically manifested by lower abdominal pain with palpable mass. So clinically diagnosed as complex ovarian cysts. Final diagnosis as MPICs is made on histopathological examination