International green hydrogen regulations, standards, and guidelines are reviewed to assess their applicability to the Jordanian context. The analysis covers European Union directives, ISO and IEC standards, and best practices drawn from Germany, Japan, and Saudi Arabia. A gap analysis is conducted against Jordan's Draft National Hydrogen Strategy (2023) and the World Bank's 2025 policy note. Five regulatory gaps are identified: the absence of a dedicated hydrogen code, missing certification and quality standards, incomplete safety and technical codes, undefined infrastructure regulations, and weak policy integration. A two-phase adaptation roadmap is proposed, covering 2025 to 2030 and 2030 to 2050. Legislative reform, institutional capacity building, and regional cooperation are recommended to position Jordan as a green hydrogen production and export hub.