The hydrogen sensor industry in Europe is experiencing significant growth, with sales projected to reach US$ 145.8 million by 2034, driven by the continent's push towards decarbonization and renewable energy sources. As Europe advances towards a hydrogen economy, hydrogen is increasingly being utilized in energy storage, industrial applications, and transportation sectors, necessitating the use of reliable hydrogen sensors for safety and monitoring. In Russia, industries like petroleum refining, power generation, and chemical manufacturing are adopting hydrogen for various applications, leading to an increased demand for hydrogen sensors to ensure safety and detect leaks. Similarly, Germany is integrating hydrogen into key sectors such as transportation and heavy industry to support its renewable energy transition, further contributing to the demand for hydrogen sensors. The study highlights the popularity of electrochemical-based hydrogen sensors, which offer tailored detection of specific gases and enhanced operational flexibility. These sensors function like batteries and are preferred by gas detector manufacturers and original equipment manufacturers (OEMs) for integration into production units. Key market players in Europe, including NTM Sensors, H2scan, SST Sensing, SmartMembranes, and Alpha Omega Instruments, are investing in new product development and ensuring quality control to meet the increasing demand for hydrogen sensors. The segmentation of the hydrogen sensor market in Europe includes categories based on technology, maximum measurement range, utility, end use, and country. Overall, the sentiment towards hydrogen sensors in this article is positive, emphasizing the growing market, technological innovations, and the pivotal role of hydrogen in Europe's decarbonization efforts.