The chapter discusses the integration of pyroelectric and plasmonic materials to enhance their respective functionalities, particularly in energy harvesting, infrared sensing, and other applications. Pyroelectric materials, which generate electrical charges in response to temperature changes, are valuable for energy harvesting and sensing applications. Plasmonic nanomaterials, on the other hand, can produce rapid and localized heating upon illumination, making them suitable for enhancing the pyroelectric response. The combination of these materials leverages the strengths of both, leading to improved performance in various applications. The chapter begins by introducing the fundamental properties of pyroelectric and plasmonic materials, including the mechanisms of the pyroelectric effect and the behavior of plasmonic nanoparticles. It then outlines the benefits of combining these materials, such as achieving large and rapid temperature changes, which can be translated into significant electrical responses. The review covers a range of applications, including energy harvesting, where hybrid structures can convert light into electrical energy through the pyroelectric effect. Infrared detectors and photodetectors are another focus, with plasmonic-pyroelectric combinations enhancing sensitivity and selectivity. Catalysis and bio-applications are also discussed, highlighting the potential for improved performance in these areas. The chapter concludes by discussing the challenges and future perspectives in developing more efficient plasmonic-pyroelectric materials and structures, emphasizing the need for further research to optimize their performance in practical applications.The chapter discusses the integration of pyroelectric and plasmonic materials to enhance their respective functionalities, particularly in energy harvesting, infrared sensing, and other applications. Pyroelectric materials, which generate electrical charges in response to temperature changes, are valuable for energy harvesting and sensing applications. Plasmonic nanomaterials, on the other hand, can produce rapid and localized heating upon illumination, making them suitable for enhancing the pyroelectric response. The combination of these materials leverages the strengths of both, leading to improved performance in various applications. The chapter begins by introducing the fundamental properties of pyroelectric and plasmonic materials, including the mechanisms of the pyroelectric effect and the behavior of plasmonic nanoparticles. It then outlines the benefits of combining these materials, such as achieving large and rapid temperature changes, which can be translated into significant electrical responses. The review covers a range of applications, including energy harvesting, where hybrid structures can convert light into electrical energy through the pyroelectric effect. Infrared detectors and photodetectors are another focus, with plasmonic-pyroelectric combinations enhancing sensitivity and selectivity. Catalysis and bio-applications are also discussed, highlighting the potential for improved performance in these areas. The chapter concludes by discussing the challenges and future perspectives in developing more efficient plasmonic-pyroelectric materials and structures, emphasizing the need for further research to optimize their performance in practical applications.