CO2 Pipelines segmentation by application distinguishes three principal uses—Enhanced Oil Recovery (EOR), Carbon Capture and Storage (CCS) for power and industrial emitters, and Industrial Utilization such as chemical feedstock production. The EOR segment remains the largest, responsible for roughly 45 % of pipeline throughput, because oil producers leverage captured CO2 to sustain reservoir pressure and extend field life, creating a direct revenue stream that justifies infrastructure investment. CCS, accounting for about 35 % of the market, focuses on long‑term sequestration of CO2 from coal‑fired power plants, cement factories, and steel mills; its growth is tied to climate policies and tax incentives that offset higher project costs. Industrial utilization, though smaller at an estimated 20 %, captures value by supplying high‑purity CO2 to manufacturers of urea, polymers, and synthetic fuels, thereby integrating pipelines into circular‑economy loops. Each application imposes unique technical specifications—EOR pipelines often operate at moderate pressures and tolerate impurities, whereas CCS lines require ultra‑high pressure and rigorous monitoring to ensure permanent storage. This CO2 Pipelines segmentation taxonomy clarifies how distinct end‑uses collectively shape the total CO2 Pipelines market size and investment dynamics.