Background: The most common cause of TMJ problems is disc displacement. Complementary imaging exams are needed since a clinical examination alone could not provide a diagnosis. Magnetic resonance imaging (MRI) is the gold standard modality, however because of its limited availability, lengthy scanning time, and expensive cost, it is difficult to use MRI as a screening technique. It has been proposed that USG may be used instead of X-rays to diagnose TMJ problems. Objective: Compare the accuracy of ultra sonography and magnetic resonance imaging in the diagnosis of temporomandibular joint disc displacement. Methods: Forty patients with temporomandibular disorders, both sexes, were included in this research. MRI was the gold standard for all patients' TMJs, followed by blinded operators performing high resolution ultrasound (HRUS) in both closed and open jaw positions to identify disc location. Ultrasonography findings were compared with MRI data to see which was more accurate. Results showed that HRUS had a sensitivity of 73.33 percent, specificity of 88.6 percent, and accuracy of 80 percent when used in a closed mouth position, but a sensitivity of 93.75 percent, specificity of 89.1 percent, and accuracy of 91.7 percent when used in an open mouth posture. When seen from the side, HRUS is 50% sensitive in the closed-mouth position and 100% specific in the open-mouth position, with an accuracy of 97.5 - 98.75 percent. TMJ disc displacement may be diagnosed with high-resolution ultrasonography (HRUS). There's much more to learn. To be sure of our findings, further studies with bigger sample numbers are needed.