This chapter covers research on the applications of non-woody lignin in adhesives and coatings and compares it with other materials in terms of performance and environmental impact to address the need for sustainable alternatives to petrochemical-based adhesives. The chapter aimed to evaluate mechanical and chemical performance, benchmark extraction and modification methods, compare lignin-based adhesives with synthetic and bio-based counterparts, analyze environmental impacts, and assess formulation strategies enhancing durability and water resistance. A systematic analysis of experimental and environmental studies revealed that non-woody lignin adhesives achieve competitive bonding strengths, often meeting industry standards, particularly when chemically modified or combined with bio-polymers. Extraction and modification techniques critically influence adhesive efficacy, with organosolv and chemical functionalization improving reactivity and substitution rates. Environmental assessments indicate reduced carbon footprints and toxicity relative to synthetic adhesives, though comprehensive life cycle analyses remain limited. Formulation advances, including multifunctional crosslinkers and dynamic networks, enhance water resistance and durability, yet challenges persist under severe wet conditions. Industrial applicability is demonstrated through compatibility with existing manufacturing processes and standards, though variability in lignin quality and scalability issues require further resolution. These findings collectively underscore non-woody lignin’s potential as a sustainable adhesive and coating material while highlighting the necessity for standardized methodologies and integrated environmental-performance evaluations to facilitate industrial adoption and environmental stewardship.