This book is meticulously organized into six chapters, aligned with the CMO5 series of 2018 and incorporated the Criminology Licensure Examination (CLE) Table of Specification (TOS) to ensure comprehensive coverage of foundational topics in criminology. Each chapter delves into critical areas essential for understanding the field: Chapter I explores the basic concepts of criminology; Chapter II addresses the basic theories in criminology; Chapter III examines fundamental concepts related to law, crime, criminals, criminal justice, deviance, and delinquency; Chapter IV focuses on measuring crime and victimology; Chapter V discusses punishment, sentencing, and rehabilitation; and Chapter VI offers an in-depth look at the criminology profession in the Philippines. This structured approach provides readers with a thorough grounding in both theoretical and practical aspects of criminology, tailored to the context of the Philippine legal and social landscape.