The concept of AI-Based Digital Twins for Multi-Intent 6G Networks is an emerging area in telecommunications, focusing on integrating artificial intelligence (AI) with digital twin technology to enhance the design, management, and optimisation of future 6G networks. This book discusses the concepts, solutions, applications, architecture, and challenges of digital twins in 6G networks. It provides insights into how digital twin technology can be instrumental in realizing the objectives of 6G communication systems. Digital Twins for 6G: Fundamental Theory, Technology and Applications.This publication delves into AI-enabled data management for digital twins, exploring how AI techniques empower the collection, storage, and processing of data in the context of 6G networks. Artificial Intelligence-Based 6G Networking Covering topics from MIMO and massive MIMO to holographic communications and quantum communications, this book explores cutting-edge technologies and their integration into 6G networks.