Objective: To determine the frequency of symptomatic nasal septal deviation in patients with sinusitis. Study Design: Cross-Sectional Study. Setting: Department of Otolaryngology and Plastic Surgery, Jinnah Hospital & Burn Center Lahore. Period: 1st January, 2019 to 31st December, 2019. Material & Methods: A total of 165 cases who fulfill the inclusion criteria were enrolled from ENT & Plastic Surgery OPD of Jinnah Hospital & Burn Center, Lahore. After the informed consent, clinical and CT scan examination was done with 16-slice MDCT scanner in all the cases. The images were retrieved in external hard drives. The nasal septum was evaluated for presence of deviated nasal septum. Data was entered and analyzed using SPSS v23.0 and was stratified for age and gender. Chi-square test was applied for post stratification. A p-value ≤0.05 was considered as significant. Results: Among 165 patients there were 109(66.1 percent) males and 56 (33.9%) females. The average mean age was 37.3± 12.3 years.121 (73.3%) patients out of 165 had deviated nasal septum (DNS) associated with sinusitis. Conclusion: Nasal septal deviation is a very common condition in our country and is significantly associated with sinusitis. This study highlights the prevalence of deviated nasal septum and its accompanying symptoms that need to be considered during the clinical and radiological evaluation of patient.