The textbook "Electron Transport in Nanosystems" offers a comprehensive collection of contributions derived from the proceedings of the NATO ARW workshop held from September 17 to 21, 2007, in Yalta, Ukraine. The discussions during the workshop covered a wide range of topics related to the latest applications of nanodevices, novel materials, superconductivity, and sensors. Significant advancements in nanoscience have been made in recent years, revealing new physical phenomena that occur when systems are reduced to microscopic dimensions. The book highlights developments in spintronics, molecular electronics, and quantum information processing, as well as the role of graphene in these research areas. It also addresses important open questions regarding cuprate superconductivity and novel superconductors, making the book a valuable resource for researchers and students in these dynamic fields.