During the 1998–99 FC Barcelona season, the club once again retained the La Liga title.

Barcelona enjoyed a great season with their new signings Ronald de Boer, Patrick Kluivert, Frank de Boer, Mauricio Pellegrino, Boudewijn Zenden and Phillip Cocu.

Barcelona were eliminated by Valencia in the quarter-final of Copa del Rey.

Following another lackluster performance in the First Group Phase against two European giants Bayern Munich and Manchester United with wins, draws and losses twice respectively and thus prevented Barcelona qualified to UEFA Champions League quarter finals.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.