Hydrogen transport is the academic field and scientific concept dedicated to investigating the mechanisms, kinetics, and influencing factors governing the movement of hydrogen atoms, ions, or molecules within, through, or across various media, including solid materials, liquids, and gases. This research area characterizes processes such as diffusion, permeation, and trapping, examining how material properties, temperature, pressure, and structural defects impact hydrogen mobility and distribution, which is critical for applications in energy technologies, nuclear science, and materials integrity.