A case of primary cervical carcinosarcoma is presented. The tumor occurred in a 76-year-old multiparous woman and it replaced the uterine cervix, extending to the vaginal wall and to the uterine corpus. Histologically, the carcinomatous component was exclusively an adenoid-cystic carcinoma and the sarcomatous component was an homologous stromal sarcoma. Immunohistochemically, both the carcinomatous and the sarcomatous elements were stained with smooth muscle actin. Only two other similar cases have been reported.