We evaluated antibiotic prescribing practices for neonates and infants hospitalized with infections in resource-constrained healthcare settings, where antimicrobial resistance is responsible for significant neonatal morbidity and mortality. A point prevalence survey of 667 admitted infants across 10 clinical sites in Southeast Asia revealed a total of 405 antibiotics were prescribed to 218 infants, with high use of World Health Organization-classified "Watch," "Reserve" and "Not Recommended" antibiotics.