The book "Biocomposites from Poly Hydroxybutyrate and Bamboo Microfibrils" offers a comprehensive analysis of the development and application of bio-based composite materials. In light of the growing demand for environmentally friendly alternatives to petroleum-based materials, the monograph highlights the extraction of microfibers from raw bamboo and the production of fully biodegradable biocomposites. These consist of polyhydroxybutyrate (PHB) as the matrix polymer and bamboo microfibrils as the reinforcing element. The authors investigate the physical-mechanical and thermal properties of the resulting composites and demonstrate how these properties change with the content of bamboo microfibrils. These findings are significant for the development of sustainable materials for various structural applications.