Hydrogen is gradually acknowledged as a clean and versatile energy storage medium with substantial potential across transportation, domestic, and industrial sectors. Although its current application is concentrated in the chemical industry, global endeavors in pursuit of decarbonization are anticipated to drive substantial growth in hydrogen demand. This review explores the role of concentrated solar power-aided thermochemical processes in sustainable hydrogen and syngas production. These solar-driven processes employ high-temperature solar energy to transform carbonaceous feedstocks such as methane, coal, and biogas through gasification, reforming, chemical looping, and pyrolysis, often utilizing metal oxides as oxygen carriers. Such mechanisms not only improve conversion efficiency and minimize CO₂ emissions by eradicating fossil fuel combustion as a source of heat but also facilitate solar energy storage in the form of dispatchable and storable chemical fuels. The review further investigates the incorporation of these processes with metallurgical uses, consisting of solar carbothermal reduction for metal production. Significant advancements in solar reactor prototypes are outlined, accompanied by an analysis of opportunities and challenges associated with upscaling and commercializing these technologies. Altogether, this work offers a comprehensive outline of solar thermochemical roots to produce clean syngas and hydrogen, highlighting their ability to foster global energy sustainability.