Stunting is a physical growth disorder characterized by a decrease in the speed of growth that occurs due to lack of nutritional intake in children in the first 1000 days of life. The prevalence of stunting in Pasuruan Regency is high, at 22.5%. The area with the highest prevalence of stunting is the coastal area. This study aims to determine the factors that cause stunting in children under five in the coastal area of Pasuruan. The results showed that from the 17 variables analyzed, 6 factors were formed that influence the incidence of stunting in coastal areas, including high parental education factors, history of infectious diseases, economy, breastfeeding, family structure and nutrition of pregnant women. The results showed that from the 17 variables analyzed, 6 factors were formed that influence the incidence of stunting in coastal areas, including high parental education factors, history of infectious diseases, economy, breastfeeding, family structure and nutrition of pregnant women. The results showed that from the 17 variables analyzed, 6 factors were formed that influence the incidence of stunting in coastal areas, including high parental education factors, history of infectious diseases, economy, breastfeeding, family structure and nutrition of pregnant women. An integrated and multisectoral program is needed to increase family income, family knowledge related to balanced nutrition and growth and development of toddlers to reduce the incidence of stunting.