Due to their complex physical properties, boron nitrides find use in a wide variety of technological lubrication, material coatings, refractory materials in metallurgy, insulators in integrated circuits, piezoelectricity, nanoelectronic devices, medicine, and cosmetics, to name just a few. This text gathers together the most up-to-date information available on synthesizing technologies, physical properties, and technical applications of boron nitrides.