Palm plantations are the main source of livelihood for significant sectors of the world population, especially in the south. Whereas the main products of palm plantations receive wide attention within the scientific and industrial community worldwide, their biomass waste receive little attention. This biomass waste may represent a sustainable material base for a wide spectrum of industries ranging from compost. Thus, there is a need to valorize palm biomass waste and maximize their added value via industrial technological advancement that can help in the sustainable development of vast rural areas around the world. This Special Issue invites manuscripts that further our understanding of palm biomass and waste valorization in added-value applications, including construction and building, pulp and paper, textiles and fibers, biocomposites, food products, lumber substitutes, organic fertilizers, natural fodder and silage, biofuel and biochar.