Early marriage is a socio-demographic phenomenon characterized by the formal or informal union of individuals below a specified age, typically considered the age of legal majority or 18 years. As a research concept, it constitutes a critical area of study investigating the prevalence, determinants, and multifaceted consequences of such unions across diverse cultural, legal, and socio-economic contexts, with particular focus on impacts related to health, education, economic empowerment, and human rights.