Nanocellulose is categorized as a renewable source of materials that displays remarkable physical properties together with low toxicity and cost production, earth-abundance and biocompatibility, leading to its use in different applications, ranging from electronic to medical and pharmaceutical devices, together with its integration in other systems acting as a composite. The symposium aims at giving an overview on recent advances of nanocellulose materials, as well as other biopolymers and composites, together with the large range of applications where the optimized materials can be incorporated. Furthermore, all extraction or production routes of nanocellulose/biopolymers (plants, animals, and bacteria) will be considered.