Multi-phase biomaterials based on bacterially synthesized nanocellulose andmethod forproducing same are provided. The aim of the invention was to create multi-phasebiomaterials based on bacterially synthesized nanocellulose without requiredadditives andcomposite formations and to influence the BNC properties of said multi-phasebiomaterials. According to the invention, the bacterially synthesizednanocellulose issynthesized from a plurality of different cellulose-producing bacterialstrains into aplurality of different bacterial cellulose networks, which comprisehomogeneous and/orlayered (2, 3) phases. The proposed BNC materials are suitable for wide use,for example,in medicine, in technology, and in the food industry due to highly versatiledeterminablestructures and material properties.