Ryūsei

Ryūsei, Ryusei or Ryuusei may refer to:

Vehicles

 * Aichi B7A Ryūsei (流星), a World War II Japanese bomber
 * OREX Ryūsei (りゅうせい), a NASDA reentry demonstrator
 * SS Ryūsei Maru (隆西), a Japanese transport ship during World War II

Other

 * Ryūsei (given name), a masculine Japanese given name
 * Ryusei (competition) (竜星), a Go competition
 * Ryūsei / Sharirara (流星/シャリララ), a single by Japanese rock band FLOW
 * Ryusei (song), a CD single by Sandaime J Soul Brothers from Exile Tribe
 * Ryūsei-ha, a Japanese school of ikebana
 * Ryūsei (signal rocket) (龍勢), a type of gunpowder signal rocket used in medieval Japan