Introduction. Spinal cord injury is a serious condition that has a profound impact on pulmonary functions and quality of life. Ergometer training is a form of fitness training, seems to influence cardiorespiratory fitness among young individuals. Objective was to evaluate the effect of upper limb ergometry on pulmonary functions in thoracic spinal cord injury patients. Methods. A randomized, parallel control trial was conducted by lottery method. 44 patients (22 in each group), who had upper and lower thoracic spinal injuries, aged 25-45 years of either gender were included. Patients were randomized into progressive upper limb ergometer training (group A) and conventional therapy (group B), and training was continued for 6 weeks. Outcomes were measured by using a spirometer for pulmonary function tests, assessed at baseline and of each week. Results. Total of 44 participants were analysed in which mean age in group A was (35.77 ± 5.58) years and in group B was (32.27 ± 6.85) years. Mann-Whitney U-test was used for Intergroup comparison of baseline to end values of (FEV1, PEF and FVC). FEV1 was significantly improved on postintervention (p-value = 0.008). Post-training PEF was significant improved in both groups having with (p-value = 0.001). FVC was also significantly improved (p-value = 0.003), at the end of 6th week. Conclusion.Current study reports that upper limb ergometry has positive effects on spirometry values which indicates the improvements in FVC, FEV1, and PEF values along with the improvements of pulmonary functions in thoracic spinal cord injury patients.