The Organic Green Corrosion Inhibitors segmentation by application delineates five primary end‑use domains that collectively shape market dynamics. Oil & Gas accounts for the largest share, driven by the sector’s stringent demand for environmentally compliant inhibitors in drilling fluids, pipelines, and refineries, representing roughly 35 % of total revenue. Automotive follows at 25 %, where manufacturers integrate green inhibitors into cooling systems, brake lines, and chassis components to meet tightening emissions standards. The Marine segment, contributing about 20 %, focuses on hull protection and ballast water treatment, where biodegradability mitigates ecological impact. Infrastructure—including bridges, pipelines, and water distribution networks—captures 12 % of the market, reflecting municipal investment in sustainable maintenance practices. Finally, Power Generation holds an 8 % share, primarily in steam turbines and cooling towers where inhibitor performance must align with high‑temperature, high‑pressure conditions. This application‑centric taxonomy clarifies how each sector’s regulatory pressures and operational requirements drive distinct demand patterns within the overall market.