The Fussball Club Basel 1893 1983–84 season was their 90th season since the club was founded. It was their 38th consecutive season in the top flight of Swiss football after they won promotion during the season 1945–46. They played their home games in the St. Jakob Stadium. Urs Gribi was their newly appointed chairman, he replaced Roland Rasi who stood down at the AGM after just one year chairmanship.