The article discusses innovative approaches to green hydrogen production through the utilization of metal waste and Transition Metal Nitrides (TMNs). Metal waste, including aluminum, magnesium, zinc, and iron, is highlighted for its role in enabling eco-friendly hydrogen generation. Notably, aluminum can achieve hydrogen yields of up to 98%, showcasing its potential in sustainable energy systems. In contrast, less reactive metals like zinc require more demanding conditions to achieve lower outputs. The review emphasizes the importance of additional purification processes to ensure hydrogen purity for practical applications. Transition Metal Nitrides (TMNs) are introduced as stable and cost-effective electrocatalysts for the hydrogen evolution reaction (HER). These materials are valued for their high electrical conductivity, chemical stability, and catalytic activity, presenting a viable alternative to platinum-based catalysts. However, challenges persist in optimizing TMNs, particularly in enhancing their active surface area, cycle durability, and developing reproducible synthesis methods. Understanding the relationship between TMN structural features and their catalytic behavior, especially under neutral pH conditions, is crucial for advancing their application in hydrogen technologies. The integration of metal-assisted hydrogen generation with TMN-based electrocatalysis is portrayed as a promising approach for achieving high-efficiency, low-cost, and sustainable hydrogen production. This synergistic pathway is envisioned to power a wide range of technologies, spanning from fuel cells to industrial energy systems. Overall, the article conveys a positive sentiment towards the potential of metal waste and TMNs in driving green hydrogen technologies and contributing to the global shift towards cleaner and more sustainable energy systems.