The purpose of the study was to comparethe effects of Pilate’s exercises & Swiss ball exercises on pain and functional disability in patients with chronic nonspecific low back pain by the end of 6 weeks. 60 participants were divided into 2 groups, 30 in each group (including both males and females) ranging from 18-45 years old along with the inclusion criteria which were randomly selected. Pilates and Swiss ball exercises session were conducted for 3 times per week for about 6 weeks. The subjects were evaluated before and after 6 weeks. Numerical rating scale (NRS) and Oswestry disability index (ODI) was to assess the effects of Pilates and Swiss ball exercises. Statistical analysis of the data was done and significant improvement in numerical rating scale and Oswestry disability index (p<0.05) was noted in each group but Swiss Ball exercises prove to be more effective than Pilates. Hence, these result suggested that after 6 week Swiss ball exercises proved more effective on chronic nonspecific low back pain and functional disability than Pilate’s exercises.