Introduction: Tennis Elbow [Lateral Epicondylitis] is one of the most commonly encountered musculoskeletal entities in OPD with incidence of 4-7 per 1000 with a peak at 35-40 years. Overuse activity may be the cause of disease. Conservative Management includes activity modification, RICE Regime [Rest, Ice Compression, Elevation], NSAIDs, Corticosteroid Injection. Corticosteroid Injection works by suppressing inflammatory process. Platelet Rich Plasma [PRP] has been promoted as biologic autologous blood derived product. It works by releasing high concentrations of platelet derived growth factors [PDGF]. These growth factors stimulate stem cell recruitment, increases local vascularity and directly stimulates production of collagen by tendon sheath fibroblast thus enhancing tendon healing. The aim of the study is to study functional outcome of Platelet Rich Plasma (PRP) for management of Tennis elbow. Objectives of the Study: The purpose of our study is to  Study the functional outcome of platelet rich plasma [PRP] therapy in treatment of tennis elbow. Materials and Methods: Our prospective study is a series of 62 cases of tennis elbow treated by platelet rich plasma [PRP]. This study was conducted over a period of 2 years i.e., 2020 to 2022. Patients were followed at an interval of 1 month and 6 months. Outcome was assessed using VAS (Visual analogue score) and Nirschl staging. Source of Data: Patients of both sex belonging to adult age group presenting with tennis elbow to the Orthopaedic Department of our institution were selected. Method of collection of Data Sample size: 62 Adult patients with tennis elbow who were willing for PRP therapy were evaluated during the period of study. Patients were evaluated by VAS (Visual analogue score) and Nirschl staging. Informed and written consent of the patient taken for the procedure. Result: Out of the total 62 patients who were treated with platelet rich plasma injection (PRP),36 patients were male and 26 patients were female.