During COP29 in Baku, Azerbaijan, UNIDO and HINICIO unveiled a study highlighting 16 developing countries poised to drive the global hydrogen market. The analysis focused on clean hydrogen technologies, emphasizing key stakeholders and challenges faced in these nations. Out of 141 developing countries, 35 are actively implementing clean hydrogen projects, with a significant emphasis on production, mobility, and ammonia technologies. Latin America, the Caribbean, Asia, and Africa are the main regions hosting these projects, with a particular focus on clean hydrogen production. The study identified over 200 institutions and companies involved in these initiatives, with notable contributions from nations like China, India, Brazil, Costa Rica, and Colombia. Challenges faced by innovators include financial support, regulatory gaps, infrastructure deficiencies, and technology limitations. To address these issues, national initiatives are focusing on public policies and regulatory frameworks, with efforts to establish certification systems and hydrogen hubs. International cooperation plays a crucial role in supporting these endeavors, with countries like Brazil, China, India, and Morocco receiving substantial assistance. Despite progress, challenges like inadequate infrastructure and limited coordination persist. The study underscores the importance of demonstration projects, national roadmaps, and partnerships in creating a competitive clean hydrogen ecosystem, with only 47 out of 141 countries meeting these criteria. By evaluating aspects like innovation, financing mechanisms, partnerships, and collaborations, 16 countries have emerged as leaders in clean hydrogen innovation within the developing world.