Background: Childhood lower respiratory tract infections (LRTIs) are prevalent and, if left untreated, can have significant rates of morbidity and mortality. Coexisting dyselectrolytemia poses a challenge during management and increases morbidity. The present study was conducted to assess hyponatremia in pediatric patients with pneumonia. Materials & Methods: 72 children admitted with pneumonia aged 2 months to 5 years of both genders were randomly selected. Clinical features defined as per modified WHO/BTS guidelines were recorded. All children were screened for dyselectrolytemia on admission. Other investigations were done whenever required. Results: Out of 72 children, 42 were boys and 30 were girls. Clinical features were fever in 65, cough in 52, abdominal pain in 16, chest pain in 18 and nasal congestion in 31 patients. Grading of hyponatremia was normal in 8, mild hyponatremia in 15, moderate hyponatremia in 19 and severe hyponatremia in 30 cases classify mild moderate and severe hyponetrimia. The difference was significant (P< 0.05). Conclusion: Pneumonia in children frequently results in hyponatremia. When hyponatremia is present in children admitted with pneumonia, the morbidity rate increases.