Background: Standard treatment of Stress fracture includes rest, compression, elevation and passive stretching. Low level laser therapy (LLLT) has been described in treatment of joint conditions, tendophaties, musculofascial pains and dermatological conditions. A prospective randomized control study was carried out to assess efficacy of LLLT in treatment of stress fractures in tibia. Method: 68 cases were enrolled. 34 each in control and test group. Control cases were treated with placebo and test group with laser-therapy. Complete resolution of pain and tenderness, and return to painless ambulation was taken as end point of therapy in both groups. Result: The test group showed earlier resolution of symptoms and painless ambulation with fewer recurrence. Conclusion: LLLT appears beneficial in treatment of stress fracture in this preliminary study. A larger multicentric study is indicated to prove the benefit conclusively.