INTRODUCTION: To determine the factors affecting prolonged hospitalization in children 6 months to 5 years diagnosed with severe pneumonia. METHODOLOGY: The study was a retrospective chart review of patients aged 6 months to 5 years diagnosed with Severe Community Acquired Pneumonia and admitted at the Philippine Children’s Medical Center over a 24-month period from January 2018 to December 2019. Variables such as the age and gender of the child, immunization and socio-economic status as well as presence of hypoxemia, respiratory rate on admission, nutritional status and number of antibiotics were correlated with the duration of stay. RESULTS: Younger age, low socioeconomic status and greater number of antibiotics used were found to be significantly associated with prolonged duration of hospital stay after controlling for other variables. CONCLUSION Findings in this study can help pediatricians to identify children with severe pneumonia who will likely need to be admitted for a prolonged period of time.