This study aimed to determine the effect of project-based education on children's early literacy skills. Experimental design with pre-test-post-test control group was used in the research. The study group of the research consisted of a total of 36 children in the experimental (n: 18) and control (n: 18) groups, who attended independent kindergartens affiliated to the Ministry of National Education in the city center of Afyon, which were randomly selected from the population. As a data collection tool in the study, the "General Information Form" developed by the researchers to collect personal information about children and families (gender, number of siblings, duration of pre-school education, parents' ages, educational status, occupation) and to evaluate early literacy skills the "Test of Early Literacy" (TEL) developed by Kargin, Güldenoglu and Ergül (2015) were used. A project-based education program was applied to the children in the experimental group, 3 days a week for 8 weeks. A statistically significant difference was found between the pre-test and post-test mean scores of children in the experimental and control groups on all TEL and its subdimensions, in favor of the scores they obtained in the post-test. Because of the positive change in the experimental and control groups, the differences between the pretest and post-test scores were compared between the children in the experimental and control groups. As a result of the comparison, a statistically significant difference was found in favor of the experimental group.