Ji̍t-pún Kok-iú Thih-tō (日本國有鐵道) sī Ji̍t-pún khah-chá ê kok-thih kong-si; lo̍h-bóe thiah chò 7 keng chèng-hú chhut-chîⁿ keng-êng ê JR bîn-êng-hòa kong-si.
