This book presents peer reviewed articles from the 3rd International Conference on Recent Advances in Fluid Mechanics and Nanoelectronics?ICRAFMN-2025, held from 29th to 31st October at Bangkok in Thailand. It contains a curated collection of scholarly contributions that reflect the convergence of contemporary research and innovation in the fields of fluid mechanics, nanoelectronics, mathematics, artificial intelligence, and other related topics. It brings together leading researchers, academics, and industry professionals from around the world to engage in rigorous discourse and knowledge exchange. This book emphasizes interdisciplinary integration, highlighting the synergistic role of experimental studies, analytical modeling, and computational techniques across multiple branches of engineering and applied sciences. By addressing emerging trends and technological developments, this book aims to advance the theoretical foundations and practical applications of these domains, fostering academic excellence and promoting further exploration in related research areas.