Vitiligo is a chronic cutaneous disease characterized by milky white depigmented patches that leave psychological impact on the patient's life. New treatment modalities have been developed to shorten the duration of treatment with the least side effects. Objective: To evaluate the efficacy of NB-UVB in treatment of stable vitiligo. Patients and methods: This study included 20 patients with stable vitiligo. They were treated by NB-UVB (2 sessions weekly) for 6 months. Results: The studied patients reported clinical improvements as follow: marked response in 20%, good response in 10% and poor response in 60%. No side effects were reported. Conclusion: The present study augmented the efficacy of NB-UVB phototherapy in vitiligo.