A 37-year-old female presented with a right cervical mass. Physical examination suggested a submandibular gland (SMG) tumor, and fine- needle aspiration (FNA) confirmed the diagnosis of schwannoma. Given the benign nature of the tumor and the patient’s symptoms, intraoral mass excision was performed. Despite the mass protruding into the neck, it was successfully removed through an intraoral approach without the need for an external incision. The tumor was completely excised without neurological complications. Postoperatively, the patient showed no functional deficits, and no recurrence was observed during follow-up. Schwannomas in the submandibular region are rare, and their preoperative diagnosis remains challenging due to their resemblance to SMG tumors. This case highlights the importance of accurate differential diagnosis and demonstrates the feasibility of an intraoral surgical approach for excising cervical schwannomas with minimal complications.