Th e monograph is devoted to the electronic structure, synthesis, properties and applications of apatites. Contains extensive factual material on the study of the atomic and electronic structure of specifi c systems. Modern concepts of the structure of crystalline and disordered apatite-like structures, as well as physico-chemical, medical-biological, ecological and technological aspects of application are considered. Particular attention is paid to theoretical and applied developments in the fi eld of functional apatite-like nanomaterials. Features of the electronic structure of natural apatites are described. For specialists in the fi eld of physics and chemistry of apatites who have deal with the research, development and application of new materials, as well as teachers, postgraduates and students of relevant specialties.