The oral and Maxillofacial surgery specialty has entered a new era with the use of endoscopic techniques. Surgeons can now use the latest technological advances to improve patient outcomes. The application of endoscopic surgical techniques in Oral & Cranio-Maxillofacial Surgery not only has decreased the morbidity associated with the surgical approaches but has significantly changed the treatment philosophy for many types of procedures. TMJ arthroscopy, Sialoendoscopy, Trauma cases such as frontal sinus fractures, orbital floor fractures, and subcondylar mandible fractures are the most notable examples where endoscopic techniques have found worldwide acceptance. Additional research has to be done to simplify some difficult techniques that often require more extensive surgical exposure for visualization. Although minimal invasive endoscopic techniques are also used in facial cosmetic surgery, the discussion in this literature review article focuses on non-cosmetic procedures, and mainly in TMJ arthroscopy, Sialoendoscopy, and Facial Trauma.