The Community Math Night Facilitators' Toolkit is a detailed resource for elementary school educators to plan and implement a Community Math Night event. Community Math Nights use interactive math activities to engage families in building positive math attitudes, facilitate their participation in children's learning in grades K-5, and build a community of educators, students, families, and other caring adults. This toolkit includes planning and organizational resources, research findings on community engagement and math instruction strategies, and step-by-step instructions and printable materials for the interactive activities. It also includes a workbook that can be used as a professional learning resource on key math-learning research findings and how to apply them in practice. [For "Community Math Night Professional Learning Workbook. Appendix A. [REL 2022-120]," see ED615953. For Appendix B-H Templates and Tools and Appendix I Instructions, Prompts, and Handouts, see https://ies.ed.gov/ncee/edlabs/projects/project.asp?projectID=6685 for links.]