Nutrition is one of the aspects that might have a direct impact on a child's development and growth. Children's nutritional intake is still low, which has an impact on growth and development. Stunting is the undernutrition issue on which the government is primarily focused. This research aimed to determine the association between parental smoking behaviour and the prevalence of stunting in children between the ages of 24-59 months. This study employs a descriptive correlation research approach and is a quantitative study. This study's methodology is cross-sectional. A questionnaire on smoking behaviour and one about stunting served as the research instrument. The findings show a relationship between parental smoking behaviour and the incidence of stunting p = 0.00 (p <0.00) which indicates a relationship between smoking behaviour and the incidence of stunting with a correlation value of 0.378 which means that parental smoking behaviour variable with the incidence of stunting in toddlers aged 24-59 months has a strong correlation. Thus, parental smoking behaviour will have a direct and indirect impact.