Comprehensive Textbook on Bharatiya Nyaya Sanhita 2023 (BNS) is a scholarly yet accessible textbook-cum-commentary on India's new substantive criminal law framework replacing the Indian Penal Code 1860. It offers a clear, concept-driven, and section-wise analysis of the BNS, integrating foundational criminal law principles, comparative interpretation of the IPC–BNS, and relevant judicial precedents. The book explains both the continuity and transformation of India's criminal jurisprudence in the post-IPC era. Written with academic clarity and practical insight, it serves as an ideal core textbook for LLB students, while remaining equally valuable to legal professionals and researchers.