The calcifying odontogenic cyst (COC) or Gorlin Gold cyst is an uncommon benign cyst of odontogenic origin.COC shows mixed radiolucency and radiopacity showing cystic and solid neoplastic characteristics. This cyst often shows characteristic features of ameloblastoma and may contain ghost cells, tooth like material and calcified deposits. There are variants of COC according to clinical, histopathological, and radiological characteristics. Therefore a proper categorization of the cases is needed for better understanding of the pathogenesis of each variant. Here, we report a case of calcifying odontogenic cyst in upper anterior edentulous area in old female patient. In this case cone beam computed tomography (CBCT) could accurately reveal the extent and the internal structure of the lesion for the diagnosis of the lesion as COC