The 800 series (800系) is a Japanese Shinkansen high-speed train type operated by Kyushu Railway Company on the Kyushu Shinkansen high-speed rail line. Built by Hitachi, the trains were introduced on the all-stops Tsubame services from March 2004.

The Kyushu Railway Company, also referred to as JR Kyushu , is one of the seven constituent companies of Japan Railways Group. It operates intercity rail services within Kyushu, Japan and the JR Kyushu Jet Ferry Beetle hydrofoil service across the Tsushima Strait between Fukuoka and Busan, South Korea. It also operates hotels, restaurants, and drugstores across its service region. JR Kyushu's headquarters are in Hakata-ku, Fukuoka.