Background: The uncinate process is a thin sickle shaped, hook like projection on the lateral wall of nose and medially it covers the maxillary and frontal sinus ostium. It is the key in the bony structures of the ethmoid in the lateral nasal wall, defining the semilunar hiatus together with the ethmoid bulla. Aim Of This Study: The aim of this study is to investigate the frequency of these variations in patients with sinonasal symptoms. Materials and Methods: This study was conducted in the Department of Otolaryngology at Combined Military Hospital, Rangpur and Border Guard Hospital, Dhaka during the period from April 2019 to July 2020. A total of 116 patients with the symptoms of nasal obstruction, nasal discharge, post nasal drip and headache patients who have been diagnosed clinically with chronic rhinosinusitis and nasal polyp willing to undergo endoscopic sinus surgery and high-resolution computerized tomographic (HRCT) scanning of paranasal sinuses were included in the study. Results: Among the 116 cases, normal angulation were found in 86 (74.13%) cases on the right side and 91(78.44 %) cases on the left side. Among the study population pneumatization were identified in 34 (14.65 %) cases. Among the study population pneumatization were identified in 34 (14.65 %) cases. Regarding the variations in the superior insertion lamina papyracea were most common on both right and left side. Conclusion: A sound knowledge of its variations is important not only for diagnosis but also for planning surgery in order to avoid complications. The study was performed to be investigate the frequency of anatomical variations of uncinate process on CT.