Industrial decarbonization is critical for achieving global climate targets, yet it remains particularly challenging for energy-intensive and hard-to-abate sectors such as steel, cement, and chemical production. Hydrogen has emerged as a key energy carrier with the potential to support deep emissions reductions by providing high-temperature process heat, acting as a feedstock for industrial processes, and enabling long-duration energy storage. This chapter examines the role of hydrogen in industrial decarbonization, focusing on recent technological advances in low-carbon and zero-carbon hydrogen production pathways, including renewable-based electrolysis and hydrogen systems integrated with carbon capture technologies. Beyond technical considerations, this chapter adopts a sociotechnical perspective to assess economic feasibility, infrastructure requirements, policy frameworks, and social acceptance issues that shape hydrogen deployment across industrial sectors. By analyzing both technological readiness and broader systemic dynamics, this chapter highlights the opportunities and constraints associated with hydrogen adoption and outlines pathways for accelerating its integration into industrial decarbonization strategies.