To evaluate the effects of laser and sacroiliac join mobilization for sacroiliac joint dysfunction.The SI Joint`s primary functions are to provide to distribute trunk load to the lower limbs. Lowback discomforts are frequently caused by sacroiliac joint dysfunction (SI) Joint, which can bedifficult to diagnose. Prolonged standing or sitting postures can also make pain worse. Low Intensity Laser Therapy also known as Low Level Laser Therapy is thought to work by inducing a photochemical-reaction (Response) to light (Laser) Physiotherapist frequently Recommend spine mobilization to treat Musculoskeletal Problems. The Amplitude of Oscillating mobilization can be classified as considerable (GradesII and III) or little (Grades I and IV) depending on the possible range of motion. 5 Large amplitude oscillations excite more mechanoreceptors and hence reduce pain more effectively than small amplitude oscillations. To evaluate the effects of laser therapy and laser therapy with sacroiliac joint mobilization in patient with sacroiliac joint dysfunction. The total number of test subjects was 40. The Group(A) 20 Samples) and Group(B) 20 Samples, both groups pre and post-test values noted NPRS scale. Group-A Laser therapy was given by patient being in prone lying position and Group-B Laser therapy with sacroiliac joint mobilization techniques was given in being pronelying position. Both Groups treatment Will be given 4 weeks for Thrice a week for 30 minutes. This study was conducted as a experimental study. The sample were collected by convenient sampling technique. The data that had been gathered was statistically analyzed using an unpaired t-test. Compared to the laser group, the Laser with sacroiliac joint mobilization group exhibits significant effects in lowering pain and improving physical functional activity, as assessed by NPRS scale. It is concluded that laser therapy with sacroiliac joint mobilization technique was found to be more effective than laser therapy in sacroiliac joint dysfunction. Key Words: Sacroiliac joint dysfunction, Laser, Maitland mobilization Technique