This volume of the journal "Nano Hybrids and Composites" offers our readers a collection of the peer-reviewed articles covering some practical aspects in the research of properties and application of the micro- and nano-hybrid composite materials, biosynthesis of nanoparticles, nanosized additives in geotechnics, the nano-metal oxide for the gas sensors. We hope that the presented volume will be useful for many specialists from the area of modern functional materials.