This literature review delves into the multifaceted issue of underage marriage in Egypt, exploring its deep-rooted social, cultural, and political contexts and its implications on sustainable development. The review examines the prevalence of this practice, driven primarily by gender inequality, patriarchal norms, and economic factors like poverty. It highlights the severe consequences for girls, including compromised health, curtailed education, and increased risks of violence and exploitation. The analysis draws upon various studies and reports, including those from the World Bank and the National Council for Women, to underscore the negative impacts of early marriage on girls' well-being, fertility, and overall development. The review also explores the role of international covenants and domestic laws, and the challenges in their enforcement. The literature review also touches upon the potential solutions, including rights-based and partnership approaches, aimed at promoting girls' rights, education, and empowerment, and ultimately, reducing the incidence of underage marriage and its adverse effects.