Background: Patients suffering from Lateral Epicondylitis experience restriction in their daily activities due to the pain and dysfunction. Though the condition does not lead to disability, it limits functionality. The condition can be treated effectively in a primary health care environment. Objective: The objective of the study was to find out the functional outcome of lateral epicondylitis patients after 6 weeks of physiotherapy interventions. Methodology: A quantitative quasi-experimental study design was chosen for this study. A total of 18 participants were selected by hospital based convenient sampling technique and by the inclusion and exclusion criteria. Patients received treatment sessions for 18 sessions within the study period. The assessment was done again on a post-test on the same group using the same scales and the changes between pre and post-test of the same groups were compared. Pain and dysfunction were measured by Numerical Pain Rating Scale (NPRS) and Patient Rated Tennis Elbow Evaluation (PRTEE). Result: The result shows significant reduction of pain between baseline assessment and posttest. Overall pain in affected arm shows (p=0.001), specific activities (p=0.000) and usual activities (p=0.000). Distribution of pain during pretest found 6 (30%), specific activities 4 (20%) and in usual activities 3(17%) which was comparatively reduced after 6 months physiotherapy treatment found in posttest distribution was in affected arm 1 (2%), specific and usual activities was same in each 2 (9%) which proved that the physiotherapy treatment was more effective for reduction of pain of the Lateral Epicondylities. Conclusion: After 6 weeks of physiotherapy interventions, patient showed better outcome of the treatment and better recovery from Lateral Epicondylitis. So, the treatment program should be started as early as possible.