AIAA G-095A-2017 presents information that designers, builders, and users of hydrogen systems can use to ensure safe hydrogen systems or resolve hydrogen hazards. Guidance is provided on general safety systems and controls, usage, personnel training, hazard management, design, facilities, detection, storage, transportation, and emergency procedures. Pertinent research is summarized, and supporting data are presented relative to the topic. Additional information regarding codes, standards, and regulations, as well as a sample safety data sheet, extensive bibliography, and other useful material can be found in the annexes.