1983 Nippon Professional Baseball season

1983 NPB season
LeagueNippon Professional Baseball
SportBaseball
Regular season
Season MVPCL: Tatsunori Hara (YOM)
PL: Osamu Higashio (SEI)
League postseason
CL championsYomiuri Giants
  CL runners-upHiroshima Toyo Carp
PL championsSeibu Lions
  PL runners-upHankyu Braves
Japan Series
ChampionsSeibu Lions
  Runners-upYomiuri Giants
Finals MVPTakuji Ota (SEI)

The 1983 Nippon Professional Baseball season was the 34th season of operation for the league. The Pacific League changed their playoff system for the season, which would see the first-place team play the second-place team in a playoff if they finished within five games of each other. The system, which never ended up being used in three straight seasons, was discontinued in 1985.