Umi-Shibaura Station is a railway station on the Tsurumi Line in Tsurumi-ku, Yokohama, Kanagawa Prefecture, Japan, operated by East Japan Railway Company. The station is located on the grounds of Toshiba's Keihin Product Operations, and the only exit from the station is into the company's grounds. As a result, only Toshiba employees with valid employee ID cards and invited visitors are permitted to exit the station. A small park next to the station is open for public use; however there is no pedestrian exit from the station or park and anyone other than authorised Toshiba employees or visitors must exit by using a train.