Lichen planus is a common chronic mucocutaneous disease of uncertain origin .The treatment includes topical , intralesional and systemic corticosteroids , long–term use of which may cause some adverse effects . Low–level laser therapy (LLLT) has potential biostimulating effects by controlling the inflammatory process and promoting the healing of the tissues, without undesired adverse effect. Material and methods: 24 adult patients with Oral Lichen Planus were taken for study. . Lesions were divided randomly by SNOSE method in two groups. In each patient one side was treated with low level laser(Silberbauer India 660nm, 0.3 watt) every alternate day for a maximum of 10 sessions and other side with topical corticosteroid(0.1%Kenacort gel)four times per day for four weeks. All cases in both groups were assessed for size before and after both treatments. Result: Corticosteroid treated group showed reduction in size score than laser group Conclusion: Topical corticosteroids are more effective than LLLT. LLLT may be used as an alternative treatment for symptomatic OLP and when steroids are contraindicated