Aim of the study: The aim of this study was to assess the knowledge, habits and attitudes of parents of kindergarten children about the oral health of their children. Materials and methods: 805 parents of children of kindergarten age from different parts of the Republic of Croatia participated in this research. The research was conducted using a questionnaire created and shared via a Google form. In addition to demographic data, the questionnaire contained questions about parents attitudes to the impact of certain foods on a child's oral health, and parents attitudes about maintaining children's oral health. Results: 66.9% of respondents believe that caries is a disease that cannot be transmitted, and 66.3% of respondents taste food from the same spoon with which they will feed the child. 37.31% of children eat sweets or snacks every day. Only four parents (0.5%) knew how old the child should be at the first dentist visit, while 46% of parents believe that the child should be 4-6 years old at the first visit. It was observed that children who have a greater fear of dentists also have more caries-affected teeth (R = 0.172; P <0.001) or have previously experienced toothache (R = 0.187, P <0.001) or some other type of trauma in the oral cavity (R = 0.086; P <0.001). 46.6% of parents stated that they were not sufficiently informed about preventive measures to protect their child's oral health. Conclusion: Parents have poor knowledge about the impact of cariogenic diets and foods on their children’s oral health. Most parents of children of kindergarten age in the Republic of Croatia do not have satisfactory knowledge about preventive methods for preserving the oral health of their children.