The Sei-Kyo Maru was a Japanese cargo and transport ship involved in the Battle of Yalu River (1894) of the First Sino-Japanese War, carrying Viscount Admiral Kabeyama Sukenori, and commanded by John Wilson. See also Saikyo (Maru).
Saikyo Maru was built in 1888 and weighted 2904 tons. She was requisitioned in 1894 as an Armed Merchant Cruiser/Transport and returned to commercial duties in 1895. She was requisitioned again in 1904 as a transport but was re-rated as a hospital ship in February 1905. She was later returned to commercial use and broken up in 1927.