Chondro-osseous respiratory epithelial adenomatoid hamartoma (COREAH) of the nasal cavity is an exceedingly rare benign lesion of the nasal cavity. We report a case arising in an 11-year-old male patient, who presented with a 6-month history of right-sided nasal obstruction. Examination revealed a large fleshy, tender polyp in the right nasal cavity. Computed tomography (CT) and magnetic resonance imaging (MRI) confirmed the large mass in the anterior nasal cavity extending superiorly to the cribriform plate on the right hand side. The polyp was resected endoscopically and confirmed histologically as a COREAH. The clinical differential diagnosis includes cartilaginous tumours and other hamartomatous lesions. Local resection should be curative.