This study reviews reconstruction of complex three-dimensional oral and maxillofacial defects using the single free radial forearm flap or the single free rectus abdominis musculocutaneous flap. Between 1996 and 2003, 124 patients underwent oral and maxillofacial reconstruction in the Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine. Outcomes for 22 patients who underwent three-dimensional reconstruction of multiple surfaces were evaluated. Reconstruction was performed after resection of malignant tumors in all 22 patients. Single FAFs were utilized for 11 patients and single RAMs for the remaining 11. Flap survival rate was 100%. No major donor morbidity was observed, and all surviving patients (20/22) were able to perform normal daily living activities. Single FAF and RAM are useful materials for one-stage reconstruction of complex three-dimensional oral and maxillofacial defects requiring replacement of skin, mucosa, and intervening soft tissues. Good to excellent aesthetic results can be attained in most patients.