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Abstract Recent advancements in additive manufacturing (AM) techniques have significantly expanded the potential applications of magnetic materials and devices. This review summarizes various AM methods, including ink‐based and ink‐free processes, and their use in fabricating complex magnetic structures with specific properties tailored for different fields. Key applications discussed include energy‐harvesting devices enhanced with magnetic nanoparticles, water decontamination through magnetically guided microswimmers, and magnetic soft composites in robotics and medical devices. In addition, the integration of AM in producing wearable and flexible magnetic sensors is highlighted, demonstrating its transformative impact on human‐machine interactions. Furthermore, rare‐earth‐free magnets and electric motor designs enabled by AM techniques are also discussed. Despite material compatibility and scalability challenges, AM provides opportunities for creating multifunctional, sustainable devices with reduced waste. Future research should focus on optimizing these techniques for complex applications and large‐scale production, particularly in eco‐friendly and industrial settings. 

The ever-increasing energy demand has highlighted the need for sustainable, low-carbon, and multi-functional energy solutions. Recently, multi-material additive manufacturing (MMAM) has become an emerging processing approach to prototype energy storage and conversion devices by enabling the fabrication of complex systems in a single, streamlined process while offering design freedom to customize end-product properties at precise, user-defined patterns and geometries. Moreover, it provides opportunities to fine-tune interfaces and material compositions at the microscale, opening new avenues for next-generation energy storage and conversion devices. As MMAM is still in its early stages, a comprehensive understanding of the interplay between material chemistry, processing methods, and device design is fundamental to fully realize its potential for developing high-performance energy materials. This review proposes a framework to bridge the gaps between the fundamental principles of processing physics and the practical implementation of various MMAM techniques in fabricating advanced energy storage and conversion devices, highlighting research challenges and future opportunities. 

This review highlights recent advances in additive manufacturing of rare-earth-free (REF) magnetic materials, emphasizing innovations in material synthesis, ink formulation, printing techniques, and device applications.