The Handbook on Gender Equality, Equity, and Inclusion in Sports is an intellectual output of the Women in Sport: Gender Relations and Future Perspectives (Women-Up) project, co-funded by the European Union, This comprehensive guide aims to raise awareness and inspire action for gender equality in sports, It engages stakeholders such as sports operators, policymakers, educators, and citizens to emphasize the value of sport and physical activity while providing strategies for promoting gender equality, equity, and inclusion, With eight chapters led by esteemed organizations, the Handbook covers various topics, The first chapter highlights the positive effects of physical activity on physical health, mental well-being, and social connections for individuals of all genders and ages, Subsequent chapters address women's challenges and benefits in sports, including issues related to maternity, menstruation, and female trials, The Handbook explores the risks of physical inactivity, the importance of health equity, and strategies for fostering inclusivity, It delves into governance in sports organizations, examining the representation of women in leadership roles, gender equity, barriers women face, and effective strategies for promoting equality, Another chapter focuses on sport legislation, uncovering gender disparities and offering reform strategies, The Handbook discusses dual career challenges for female athletes and provides support strategies, It also tackles gender discrimination in media coverage, the role of education in promoting equity, and the impact of intersecting identities on sports experiences, Throughout the Handbook, numerous case studies and scientific, technical, and pedagogical guidance have been presented to showcase practical and evidence-based examples of promoting gender equality in sports, The Handbook concludes by emphasizing the significance of positive action in creating a support network for gender equality, equity, and inclusion in sports, envisioning a future in which individuals of all genders thrive in the world of sports,