Various startups are at the forefront of revolutionizing the hydrogen sector by addressing challenges related to high production costs, infrastructure scalability, and safety concerns. These startups are leveraging innovative technologies such as advanced electrolyzers, methane pyrolysis, and ammonia-to-hydrogen conversion to drive down the cost of hydrogen production and enhance efficiency. Tejal Hartalkar, a Senior Disruptive Tech Analyst at GlobalData, highlights the urgent need to decarbonize industries, achieve net-zero emissions, and create sustainable energy systems as key drivers for advancements in the hydrogen sector. The article lists several top hydrogen startups categorized by their focus on specific hydrogen production technologies. For instance, Green Hydrogen startups like Hysata in Australia and Electric Hydrogen in the USA are specializing in capillary-fed electrolysis and large-scale green hydrogen production, respectively. Turquoise Hydrogen startups such as Modern Hydrogen and C-Zero in the USA are providing modular hydrogen generators and developing methane pyrolysis technology for efficient hydrogen production. Yellow Hydrogen startups like SoHHytech in Switzerland and Redeem Solar Technologies in Austria are combining solar power generation and advanced photocatalytic reactors for sustainable hydrogen production. Gold Hydrogen startups like Gold H2 in the USA are utilizing microbial processes for low-cost hydrogen production. Furthermore, notable startups like H2Pro in Israel, Enapter in Germany, and Protium in the UK are introducing innovative processes such as electrochemical-thermally activated production, modular electrolyzers, and integrated hydrogen solutions for industrial decarbonization. Overall, these startups are driving the hydrogen revolution by enhancing efficiency, reducing costs, and addressing scalability issues. Their efforts are positioning hydrogen as a key player in the global energy transition towards a more sustainable and decarbonized future.