Hydrogen Production from Fossil Energy refers to the generation of hydrogen primarily via steam‑methane reforming (SMR), coal gasification, and partial oxidation of hydrocarbons. As a cornerstone of the global energy transition, it supplies the bulk of the ~135 million tonnes of hydrogen produced annually, underpinning ammonia, refining, and emerging blue‑hydrogen projects. The Hydrogen Production from Fossil Energy market size was estimated at approximately USD 150 billion in 2025, with a growth outlook driven by decarbonisation mandates, rising demand for low‑carbon fuels, and expanding blue‑hydrogen infrastructure. Market forecast indicates a compound annual growth rate (CAGR) of roughly 5.5% from 2026 to 2033, reflecting strong macro‑drivers such as stringent carbon‑pricing policies, substantial capital investment in carbon‑capture‑utilisation (CCU) technologies, and shifting energy‑security priorities. Key forces shaping the industry include rapid advances in CCU and SMR efficiency, evolving regulatory frameworks that incentivise low‑carbon hydrogen, and intensifying competitive dynamics as oil‑&‑gas majors diversify into hydrogen. Asia‑Pacific remains the largest regional market, while the Middle East & Africa region is emerging as the fastest‑growing segment due to ambitious blue‑hydrogen roadmaps.