1998–99 Nemzeti Bajnokság I

The 1998–99 Nemzeti Bajnokság I, also known as NB I for short, is the 101th season of top-tier football in Hungary. The league is officially named Professzionális Nemzeti Bajnokság (PNB) for sponsorship reasons. The season began on 24 July 1998 and will end on the weekend 16 June 1999. Újpest are the defending champions, having won their 20th Hungarian championship at the end of the 1998–99 season.