The submandibular approach is a well-established extraoral surgical technique for managing complex mandibular fractures and pathologies, offering superior access to the mandibular body and angle. This video-based cadaveric demonstration details the procedure’s key steps, including skin incision, preservation of the marginal mandibular nerve, ligation of facial vessels, and subperiosteal dissection. The technique facilitates effective fracture reduction, fixation, and pathology management. Emphasizing anatomical landmarks and careful layered closure, this resource supports surgical training and optimizes patient outcomes in maxillofacial surgery.