Peritoneal calcifying fibrous tumor is a rare tumor in the peritoneal cavity. In this case, plain radiography showed multiple conglomerated calcifications and several separate calcifications scattered in the lower abdomen and pelvic cavity. CT showed several well-circumscribed masses with a group of conglomerated nodular calcifications in their centers, and these were surrounded by three bands with different attenuation. Ultrasonography showed a well-circumscribed mass with strong posterior shadowing from its anterior surface and hyperechoic calcifications in its center. The histopathological diagnosis was calcifying fibrous tumor. The mass was well circumscribed and non-encapsulated and it was mainly composed of hyalinized fibrosclerotic tissue and dystrophic calcification with no inflammatory cells. We report here on a case of peritoneal calcifying fibrous tumor, along with a review of the relevant literature.