The 1998–99 Fussball Club Basel 1893 season was their 106th season since the club's foundation. Following their promotion in the 1993–94 season this was their fifth consecutive season in the highest tier of Swiss football.René C. Jäggi was the club's chairman for the third year. FC Basel played their home games in the St. Jakob Stadium until 13 Dezember 1998. From 7 March 199 they played their games in the Stadion Schützenmatte while the new stadium was being built.