Abstract : Burns are a global public health problem. Problems that are often found in burn patients are wound problems, infections, sepsis, and others. Infections can be caused by bacteria, virus and fungi. Infection in burn patients may trigger an increase in morbidity rates that lead to longer hospitalization and require greater costs. Objective: The aim of this study was to explore the correlation of the types of bacteria that infect burn patients and the length of stay of bacteria-infected burn patients. Methods: This study was a descriptive study by collecting data retrospectively of burn patients in period between January – December 2015 from patient medical record in burn center of RSUD Dr. Soetomo Surabaya.The data was analyzed using excel. Results: The number of patients collected was 61 patients, of whom 41 patients were infected with bacteria. Gram-negative bacteria is the most common infectant in burn patients among them are Pseudomonas aeruginosa, Klebsiella pneumoniae, Acinetobacter baumanni, Enterobacter spp., Proteus spp. and Escherichia coli. The length of stay of burn patients who infected with bacteria was twice longer that of uninfected burn patients. the average duration of treatment for uninfected burn patients was 0-10 days whereas the length of treatment period for infected burn patients averaged 11-20 days.