Introduction: We report a case of sino-nasal sarcoma (SNS) which is a rare malignant tumor that forms in the nasal structure and only a few cases that were reported in the literature. Case Report: The patient was a 35 years old woman. She presented with a history of right nasal obstruction from a couple of months at the time of presentation and recent attacks of epistaxis. Diagnosis of SNS was made after careful history taking, Computed tomography (CT) scan and confirmed by a secondary biopsy histology report that was done in Harvard Medical school. The patient underwent surgery and the mass was excised endoscopically. Her symptoms have improved significantly and after two years follow up there was no recurrence of the tumor. Discussion and Conclusion: In conclusion, Biphenotypic Sino-nasal sarcoma is a very rare and newly diagnosed entity. However, it should be kept in mind while dealing with any suspicious nasal masses in patients especially in females.