'Biocompatible Nanomaterials' are found as important and keep growing in the field of Nanoscience and Nanotechnology. Researchers are investing much effort on the synthesis and applications of various biocompatible nanomaterials, due to their potential applications in biomedical science, biosensors, bio-chip designing, drug delivery etc. In particular, biocompatible nanomaterials are used to replace or applied directly instead of natural materials to function or contact with the living systems. This book provides new research and developments about the biocompatible nanomaterials conducted by the scientists who are currently working on Nanoscience.