This guidance note provides recommendations for developing gender factbooks as a channel to effectively communicate gender statistics, which serves as a critical input to designing and monitoring policies to improve development opportunities for all. A gender factbook is a comprehensive publication that disseminates gender statistics through visuals and tables accompanied by relevant analysis and legal or policy frameworks that give context to the data presented. This guidance note is intended to support national statistics offices in their efforts to improve existing gender factbooks or to assist a country in developing its first gender factbook. Section 2 outlines the motivation for reporting on gender data and creating a gender factbook. Section 3 provides guidance on producing and disseminating a gender factbook, leveraging best-practice examples from a comprehensive review of existing gender factbooks and publications that focus on improving the communication and dissemination of gender statistics. Section 4 concludes, and the appendixes provide valuable sources, samples, and templates.