Temporalis muscle flap is one of the most commonly used flaps in orbital reconstruction. Although multiple case series in the literature have reported elevation of the flap with an open incision and a retrograde approach from the periorbital region, to the best of the authors' knowledge, no studies have reported the use of an endoscopic method. Therefore, the authors' study presents endoscopy-assisted temporalis muscle reconstruction of a defect that occurred in the periorbital region following orbital exenteration. Minimal scarring and morbidity are some of the advantages of endoscopic methods, and healing without complications was achieved in our patient during the postoperative period. To the authors' knowledge, their study is the first to report the use of temporalis muscle flap in endoscopy-assisted periorbital reconstruction, which is a preferred method for endoscopic surgery.