The clinical findings, pathologic characteristics, and end results of 26 primary sarcomas and carcinosarcomas of uterine cervix, excluding malignant lymphomas, embryonal rhabdomyosarcomas of infancy and childhood, and four sarcomas that could not be definitely classified as to cell type, are presented. Eight neoplasms occurring in patients 31 to 61 years of age were leiomyosarcomas. Six of these patients died with massive pelvic recurrences and/or distant metastases irrespective of type of treatment within 2 years. Two patients are alive and free of disease 6 and 10 years after surgical excisions. Six patients whose age averaged 61 years had carcinosarcomas, and all succumbed to recurrent and metastatic disease within 15 months of diagnosis. In three patients, the sarcomatous component was homologous and in the other three heterologous. One neoplasm had, in addition to adenocarcinoma and squamous carcinoma, areas of adenocystic carcinoma. Twelve endocervical stromal sarcomas in patients averaging 54 years of age comprised the largest group in the series. The better differentiated neoplasms tended to remain localized and to have a better prognosis than the more poorly differentiated lesions which pursued aggressive courses. Four patients are alive and free of disease 2, 3, 11, and 18 years after surgical excisions and a fifth died of other causes after 16 years. Six patients died of recurrent and metastatic disease 2 to 24 months after diagnosis. At the present time, surgical removal of uterus and, when indicated, contiguous tissues and viscera offers the best hope of cure for cervical sarcomas and carcinosarcomas.