The sales of hydrogen sensors in East Asia are on the rise, with a projection of reaching US$ 121 million by the end of 2034, at a CAGR of 6.8%. The region's increasing focus on developing a hydrogen economy is driving the demand for hydrogen as a renewable and clean energy source for various applications. This shift has led to the need for reliable hydrogen sensors to detect leakages and monitor hydrogen concentrations for safety reasons. Key market drivers include hydrogen economy initiatives by countries like China, Japan, and South Korea, which are investing heavily in hydrogen infrastructure, safety concerns due to hydrogen's flammability, and the advancements in sensor technologies, making hydrogen sensors more efficient and accessible. Country-specific insights highlight China's market value projected to reach US$ 70.4 million by 2034, Japan's steady growth in the hydrogen sensor market driven by its focus on clean energy, and South Korea's initiatives to adopt hydrogen as a primary energy source. The market is segmented based on sensor types such as electrochemical, metal-oxide semiconductors, thermal conductivity, and catalytic sensors, with portable hydrogen sensors holding a significant market share due to their ease of use. Prominent companies in the East Asian hydrogen sensor market include Figaro Engineering Inc., RIKEN KEIKI Co., Ltd., FIS, NanoAndMore Asia, and City Technology. The future outlook for the hydrogen sensor market in East Asia remains positive, with continued growth expected due to governmental policies, technological advancements, and the increasing emphasis on clean energy. As the hydrogen economy expands, the role of hydrogen sensors will become increasingly critical in ensuring the safe and efficient use of hydrogen across various applications.