While seldom seen, giant cell reparative granuloma (GCRG) is a benign lesion; it can affect the area of the head and neck, primarily in the mandible and less frequently in the maxilla. GCRG usually develops in the first three decades of life but can be seen at any age, and it is seen more frequently in women than in men. It can be locally aggressive, despite its benign nature, with bone erosion and loss of teeth. A 16-year-old female patient was admitted to our clinic with symptoms of FB sensation in the roof of her mouth with palatal swelling that she had noticed 3 months ago, along with nasal obstruction mostly on the right side. A mass of 2.5 cm x 3 cm in size was found in the midline of the hard palate during the physical examination. Under general anesthesia, Surgical excision was done through a transoral approach with safety margins. Buccinator muscle flap was harvested and repair of the defect of the hard palate and nasal floor was done And the operation was completed. Histopathological analysis reveals that in a stroma rich with fibroblasts and lesions of new bone structures, a high number of giant cells are present. After these results, GCRG was diagnosed. Post-operative follow-up, The epithelization process was observed to be complete and the defect was healed with no recurrence.