 This review paper examines recent advances in the use of nanosellulose for enhancing the barrier properties and other performance attributes of packaging products. It confirms and extends existing knowledge about the oxygen barrier and water vapor transmission performance, strength, and susceptibility to humidity of nanosellulose-based films and coatings. Researchers have also identified several promising strategies to create eco-friendly packaging materials using nanosellulose-based layers. These include the use of multiple layers of different materials or additives such as waxes, high aspect ratio nanoclays, and surface active compounds, as well as chemical derivatization or grafting of the nanosellulose. The paper concludes that future applications are likely to involve water-based formulations, including dispersions or emulsions, depending on the end use. This article was authored by Martin A. Hub, Anna Farer, Preeti Tiagi, and others.