Fluorescent metal nanoclusters - ultrasmall particles of gold, silver, copper and platinum - are transforming analytical chemistry with their molecule-like photoluminescence, biocompatibility and chemical stability. This book offers a comprehensive guide to their synthesis, functionalization and real-world applications in sensing, diagnostics and bioimaging. Designed for researchers, students and industry professionals, it explores how precise control over size and surface chemistry enables bright, tunable fluorescence from deep blue to near-infrared. Readers will discover how these nanoclusters are used in environmental monitoring, medical diagnostics, forensics, drug delivery and optoelectronics. With emphasis on practical design strategies and emerging techniques, Fluorescent Metal Nanoclusters bridges the gap between foundational science and cutting-edge innovation. Whether you are developing fluorescent sensors or exploring bioimaging tools, this reference equips you with the insights to harness the full potential of these remarkable materials. An essential guide for analytical, supramolecular and biological chemists and anyone shaping the future of fluorescence-based technologies.