Seiryu

Seiryu, Seiryū, or Seiryuu may refer to:
 * Azure Dragon, a Chinese constellation symbol
 * Seiryu (YuYu Hakusho), a character in YuYu Hakusho anime
 * Seiryū (Fushigi Yūgi), a character in Fushigi Yūgi anime
 * Seiryu, a cultivar of the Japanese maple
 * Seiryū Inoue (1931–1988), Japanese photographer
 * Seiryu stone, a kind of stone popular in aquariums, especially for aquascaping
 * Seiryuu, the guardian of the East Gate of The Imperial Palace in Accel World
 * JS Seiryū (SS-509), a Japanese Sōryū-class submarine