Key Message
Stunting remains a major public health concern in Indonesia. Immunization is recognized as a specific nutrition-related intervention to address its direct causes. Using data from 70,267 toddlers aged 12–59 months, this study found that children with partial or no basic immunization had significantly higher risks of stunting (aPR 1.18 and 1.27, respectively) compared to fully immunized peers. Given the high stunting prevalence (23.1%) and suboptimal immunization coverage (74.9%), the findings underscore the need to strengthen immunization programs and enhance parental awareness of health service utilization, disease prevention, and the nutritional needs of young children.