Lateral epicondylitis (LE), recognized as one of the most prevalent causes of elbow pain, has an estimated incidence ranging from 1% to 3%. It most commonly presents in individuals between the ages of 40 and 50 and tends to affect the dominant limb more frequently. In the adult population, LE is the leading cause of lateral elbow pain. To date, more than 40 different treatment modalities have been described for the management of LE, primarily aiming to alleviate pain and enhance functional outcomes. However, a universally accepted standard treatment has yet to be established. The objective of this thesis is to compare the clinical effectiveness of the Mulligan mobilization technique and the myofascial release technique-both commonly utilized in the treatment of LE-through a prospective clinical study.