Kōsei, Kosei or Kousei may refer to:

Places

Kōsei, Shiga, a former town in Kōka District, Shiga, Japan

Transport

Kosei Line, a railway line in Japan Kōsei Station, a train station in Konan, Shiga, Japan

People

Charlie Kosei (born 1950), Japanese musician , Japanese sport wrestler , Japanese Paralympic swimmer Kosei Gushiken (born 1942), Japanese triple jumper Kōsei Hirota (born 1951), Japanese voice actor Kosei Inoue (born 1978), Japanese judoka , Japanese footballer Kosei Kitauchi (born 1974), Japanese football player , Japanese footballer Kosei Ono (born 1987), Japanese rugby player Kosei Shibasaki (born 1984), Japanese football player Kōsei Tomita (born 1936, dead 2020), Japanese voice actor , Japanese long-distance runner

See also Kosei Maru (disambiguation)