Instilling Islamic values in early childhood is an essential foundation for developing children's character, morality, and spirituality, particularly during the golden age, which significantly influences personality development in later stages. This study aims to analyze the importance of teacher-parent collaboration in instilling Islamic values in early childhood and to identify effective forms of cooperation that support the internalization of Islamic values. This study employs a literature review method by analyzing relevant scientific articles, journals, books, and research findings published within the last eight years. The findings indicate that collaboration between teachers and parents plays a significant role in strengthening the internalization of Islamic values, including honesty, discipline, responsibility, politeness, religious practices, and noble character. Teachers act as professional educators who provide Islamic value-based learning stimulation at school, while parents serve as children's primary educators through role modeling, habituation, and guidance at home. Effective collaboration can be implemented through intensive communication, parental involvement in school programs, monitoring children's development, and consistency in applying Islamic values in both school and family environments. Therefore, the integration of teachers' and parents' roles is a strategic factor in optimizing Islamic value education in early childhood.