This article reviews the recent advancements in generating and utilizing plasmon-induced hot electrons in various hybrid nanostructures. Plasmons, coherent oscillations of conduction-band electrons in nanostructures, decay through nonradiative channels, generating energetic carriers known as hot electrons and holes. These carriers can be collected by functional materials in hybrid configurations, facilitating photochemical processes for energy or chemical conversion. The review covers the fundamentals of hot electron generation and decay in plasmonic nanocrystals, methods for collecting hot electrons with different functional materials, and the role of plasmonic metals and heavily doped semiconductors. It also discusses site-selected growth strategies for fabricating hybrid nanostructures, emphasizing parameters that can be controlled to tailor their properties for various applications. The article highlights the potential of plasmon-induced hot electrons in photovoltaics, photodetection, and photocatalysis, with a focus on the mechanisms and mechanisms of hot electron transfer, including direct and indirect processes, and the impact of photothermal heating.This article reviews the recent advancements in generating and utilizing plasmon-induced hot electrons in various hybrid nanostructures. Plasmons, coherent oscillations of conduction-band electrons in nanostructures, decay through nonradiative channels, generating energetic carriers known as hot electrons and holes. These carriers can be collected by functional materials in hybrid configurations, facilitating photochemical processes for energy or chemical conversion. The review covers the fundamentals of hot electron generation and decay in plasmonic nanocrystals, methods for collecting hot electrons with different functional materials, and the role of plasmonic metals and heavily doped semiconductors. It also discusses site-selected growth strategies for fabricating hybrid nanostructures, emphasizing parameters that can be controlled to tailor their properties for various applications. The article highlights the potential of plasmon-induced hot electrons in photovoltaics, photodetection, and photocatalysis, with a focus on the mechanisms and mechanisms of hot electron transfer, including direct and indirect processes, and the impact of photothermal heating.