The 1998–99 Serie A saw Milan win their 16th Scudetto, led by coach Alberto Zaccheroni.
Lazio finished second, losing the title on the last day.
Inter Milan, with an often injured or rested Ronaldo, had a disastrous season, finishing in 8th position, whereas Juventus' impressive start was cut short by a bad injury to Alessandro Del Piero, and they wound up having an unimpressive season.
Salernitana, Venezia, Cagliari and Perugia had been promoted from Serie B. Udinese and Bologna qualified to 1999–2000 UEFA Cup, while Juventus qualified for the 1999 UEFA Intertoto Cup.