Chronic Obstructive Pulmonary Disease (COPD) is characterized by airflow obstruction and consequent alteration in lung function, compromising respiratory muscle strength and rib cage mobility. Joint mobilization aims to restore arthrokinetic mobility of the rib cage joints; however, there are few studies investigating the efficacy of this approach in patients with COPD. The objective was to evaluate the acute effects of joint mobilization on pulmonary function in individuals with COPD. The sample consisted of six participants with a mean age of 56.33±12.27 years of both sexes, with COPD. Pulmonary function was assessed by spirometry, manuvacuometry and pulse oximetry at two times, before and after treatment. The therapeutic intervention consisted of thoracic spine mobilization, sternal mobilization, and costal arch mobilization techniques, respectively. For the analysis of the results was used the Shapiro Wilk Test and paired Student T test, considering p<0.05. It was observed that there were no statistically significant variations after the application of the techniques in any of the evaluated parameters. Further studies are needed to investigate the effects of mobilization techniques on these patients.