The purpose of the study was to compare the effect of eccentric wrist extensor exercise and triceps strengthening on pain and functional disability in patients with chronic lateral epicondylitis by the end of 6 weeks. 30 participants (including both male and female subjects) ranging from 30-50 years of age, they were selected on the basis of inclusion and exclusion criteria and were divided into 2 groups by simple random sampling method. The subjects were evaluated before and after 6 week Statistical analysis of the data was done using paired t test within group and unpaired t test between groups, there was statistical difference within pre and post analysis of eccentric wrist extensor exercise on pain and functional disability (p value <0.0001) and pre and post analysis of triceps strengthening exercises on pain (p value <0.003) functional disability (p value <0.005), when comparison was done between the groups eccentric wrist extensor exercise was statistically more effective in reducing pain and functional disability on NPRS and PRTEE as compared to triceps strengthening.