Given the inadequate functioning of the Temporomandibular Joint (TMJ) due to neurodynamic, joint and/or myogenic consequences, we can characterize Temporomandibular Disorders (TMD), whose signs and symptoms include pain or discomfort in the TMJ, masticatory and cervical muscles, crackling, limited mandibular range of motion, difficulty in chewing, earache and headache. As for the view of treating TMDs, it is necessary to consider the association of masticatory muscles with body posture, emphasizing postural adjustments as a form of physical therapy intervention. Objective: To evaluate the effectiveness of the Global Postural Reeducation Method (RPG®) in TMDs. Methods: Quasi-experimental, exploratory and quantitative study. Sample composed of 09 individuals, both sexes, with signs and symptoms characteristic of TMD, submitted to eight visits, being one evaluation, six RPG® sessions and one revaluation. The treatment was carried out using a specific posture of the RPG® Method (frog on the ground - open arms). Results: It was observed that all patients showed important improvements in the main signs and symptoms, with an increase in the amplitude of active mouth opening in all patients, as well as an improvement in the pain symptom and the main postural changes. However, the research did not present results considered statistically important. Conclusion: Considering the results obtained in the present research, it is possible to highlight the benefits of RPG® in improving posture, the symptom of pain and the gain in amplitude of total mouth opening in patients with TMD. Since, the study had research limiting factors, such as reduced sample size and short intervention period.