This book is a collection of papers presented at the International Workshop on New Approaches for Multidimensional Signal Processing (NAMSP 2025), held at Technical University of Sofia, Sofia, Bulgaria, during July 24–26, 2025. The book covers research papers in the field of N-dimensional multicomponent image processing, multidimensional (MD) image representation and super-resolution, 3D image processing and reconstruction, MD computer vision systems, MD multimedia systems, data-based MD image retrieval and knowledge data mining, jamming image recognition and surface defects segmentation, MD signal analysis aimed at medical decision support, MD image processing in robot systems, 3D and multi-view visualization in environmental art, VR and reinforcement learning applications, tensor-based mip-map implementation, recursive filtration of MD images, and many more.