Purpose: To present the long-term skeletal stability of the maxilla after distraction osteogenesis (DO)in cleft patients. Patients and Methods: Seventeen cleft patients that had three years follow-up after DO were included in the study. There were 13 males and 4 females. Age at distraction ranged from 5.2 to 23.6 years. Cephalometric radiographs were used to measure stability. Angular and linear measurements before, immediately after, 1 year and 3 years after DO were completed. Results: The maxilla was significantly advanced in all patients (mean 10mm). There were no significant differences between the measurements at the follow-up time intervals. However, relative to the cranial base, the anterior maxilla fell back 2.4 degrees (SNA angle). The anterior aspect of the maxilla moved significantly downward (2.6 mm) in the three-year post-operative period. Conclusion: The achieved position of the maxilla after DO was stable in both horizontal and vertical dimensions. Relative to the anterior cranial base, no anterior growth of the maxilla was observed during follow-up; however, the maxilla continued to grow vertically.