Background: Indonesia has an infant mortality rate of 35 per 1,000 live births and under-five mortality rate of 46 per 1,000 live births. About half of infant and child deaths may be associated with malnutrition that often begins with a low birth weight. Malnutrition in children includes the protein energy malnutrition and the lack of nutrients such as vitamin A, iron, iodine and zinc. The mortality rate in children aged 1-5 years in Indonesia is also highest in the Association of South East Asian Nations. This suggests that growth disorders related to children nutritional status are still considered serious. One of the obstacles faced in managing good nutritional status in children is the lack of maternal knowledge about nutrition. The lack of maternal nutritional knowledge and basic education are the most important fundamental factor because it greatly affects the level of ability or intellectual property of a person. Aim: To determine the correlation between maternal education level and nutritional knowledge with nutritional status in children aged 1-5 years. Methods: This study was conducted using analytic observational study with cross-sectional design. It involved 50 children aged 1-5 years including their mothers in pre-schools in Tamantirto village, Kasihan Bantul districts, Yogyakarta. Data analysis was done using Spearman correlation test and multiple correlation test. Results: Most study participants had high education level (80%), good nutritional knowledge (66%) and normal nutritional status (70%). In the analysis result using Spearman correlation test showed that the maternal education level’s coefficient correlation was 0,334 (weak and positive correlation) and maternal nutritional knowledge level’s coefficient correlation was 0,342 (weak and positive correlation).