The JR Nambu Line is a railway line in Japan, operated by the East Japan Railway Company (JR East). It runs through the Tokyo metropolitan area, connecting Kawasaki and Tachikawa. The line is known for its convenient access to various neighborhoods and commercial districts, making it a vital transportation route for commuters. The Nambu Line spans approximately 40 kilometers and features several stations along its route. It primarily serves the Kanagawa and Tokyo prefectures, providing connections to other major lines, including the Tōkyū and JR Chūō Lines. The line is characterized by its frequent service and modern trains.