Sinonasal teratocarcinosarcoma is an extremely rare malignant growth that arises in the nasal cavity. This tumour is the product of a combination of epithelial and mesenchymal tissues. A polypoidal mass was found in the right nostril of a 40-year-old male patient who had presented with complaints of right-sided nasal obstruction and recurrent epistaxis for the past six months. Biopsy results confirmed the diagnosis and resection of the mass was done using a lateral rhinotomy approach. Post-surgical histopathological testing further validated the diagnosis. Postoperative radiotherapy and chemotherapy were recommended by the oncologist, along with follow-up scans after 6 weeks.