Comparative law scholarship has a long tradition of categorizing legal systems into broader families based on kinship and historical lineage. These classifications are founded on the observation that, while national legal systems exhibit significant differences in specific rules and procedures, these distinctions become less pronounced when analyzed through the broader lenses of socio-legal culture, historical origins, modes of legal reasoning, and overarching legal traditions. Grouping legal systems into transnational legal families facilitates comparative legal studies by enabling analyses that focus on general characteristics, structural tendencies, and jurisprudential orientations. The classification of legal systems has been a subject of scholarly debate for many years, reflecting its importance in understanding the evolution and interaction of legal traditions worldwide. Comparative law is not merely a methodological tool for legal research but is also regarded as a distinct branch of legal science, given its engagement with fundamental theoretical questions regarding the categorization of legal systems. This chapter examines various classifications proposed by both early and contemporary scholars, highlighting the underlying criteria and conceptual foundations of these frameworks. While traditional classifications have faced increasing scrutiny in recent years, the concept of legal families remains a valuable analytical framework for understanding the contemporary legal landscape.