Background: Inflammation of the tonsils, or tonsillitis, is a common clinical illness that can be brought on by a viral or bacterial infection. The present study was conducted to assess complications of tonsilitis. Materials & Methods: 94 patients of tonsilitis of both genders were selected. A thorough examination was carried out. Clinical features and complication of tonsilitis was recorded. Results: Out of 94 patients, males were 54 and females were 40. The most common clinical features were dysphagia in 62, cough in 45, lymphadenitis in 23, sore throat in 84, and fever in 22 cases. Complications were peritonsillar abscess in 12, rheumatic fever in 3 and acute glomerulonephritis in 4 patients. The difference was significant (P< 0.05). Conclusion: Acute glomerulonephritis, rheumatic fever, and peritonsillar abscess were the most frequent consequences of tonsillitis.