Segmental mandibulectomy causes severe functional disability and cosmetic problem. Many methods of reconstruction have been used but none of these procedures provides the ideal solution. There has been increased interest in the possibility of preserving a portion of the mandible and still carrying out an adequate tumor resection. We experienced a case of marginal with sagittal mandibulectomy in patient with floor of mouth carcinoma, and sagittal mandibulectomy in another patient with tonsillar carcinoma. In both cases mandible facing the tumor were successfully resected and repair of the mandible, postoperative facial contour were satisfactory. We think that these sagittal procedures are oncologically sound in its removal of tumor, biomechanically secure, and maximize postoperative rehabilitation while maintaining the normal contour of the face.