Low birth weight (LBW) continues to be a global health issue associated with neonatal mortality, prenatal morbidity, and growth disorders. RISKESDAS 2018 shows that the prevalence of LBW in East Java is 6.5% and it was a high rate (>5%). The high prevalence of LBW certainly has an impact on child growth. Therefore, this study was conducted to determine the correlation between birth weight and child growth aged 3-12 months at Lekok Health Center in Pasuruan Regency. This study used an analytic observational with a cross-sectional approach. The sample was 96 mothers who had children aged 3-12 months at Lekok Health Center in 2022. The independent variable is birth weight and the dependent variable is child growth aged 3-12 months. Data collection was obtained from primary data using a questionnaire and secondary data from the Maternal and Child Health book and it was analyzed using a Chi-Square test. Based on the study, 91.7% of infants had a normal birth weight and 8.3% had a low birth weight. Additionally, 80.2% of infants had good growth based on weight for age (WFA). This research shows that birth weight is influenced by the mothers occupation, and a childs growth is influenced by the mothers education and occupation. According to the chi-square test results regarding the correlation between birth weight and child growth, a p-value of 0.699 (p>0.05). Therefore, birth weight is not correlated with child growth aged 3-12 months at Lekok Health Center, Pasuruan Regency.