This comprehensive Data Structures textbook, published by Tech-Neo Publications for University of Mumbai's First Year Engineering program (NEP-2020 Scheme), covers essential concepts for computer science and related disciplines. The book systematically explores fundamental data structures including stacks, queues, linked lists, and trees, along with their practical applications. Designed specifically for Course Code PCC011, it caters to various computer engineering specializations including IT, CS&E, AI & ML, Cyber Security, and IoT. The content is structured for the academic year 2024-25, making it current and relevant. Written by experienced academics Pankaj B. Brahmankar and Ashraf Siddiqui, this textbook combines theoretical foundations with practical implementations, helping students build a strong understanding of data organization and manipulation. Perfect for both classroom learning and self-study, it serves as an invaluable resource for aspiring engineers in the field of computer science.