1998–99 Nemzeti Bajnokság I
The 1998–99 Nemzeti Bajnokság I, also known as NB I for short, was the 97th season of top-tier football in Hungary. The league is officially named Professzionális Nemzeti Bajnokság for sponsorship reasons. The season began on 24 July 1998 and ended 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.
Teams
, Előre FC Békéscsaba and Stadler FC finished the 1997–98 season in the bottom three places of the table and thus were relegated to their respective NB II divisions. Békéscsaba ended a 6-year and Stadler 4-year stay in the top league, while Tiszakécske were relegated after just one year in the league.Stadium and locations
| Club | Short name | City | Stadium | Capacity |
| BVSC-Zugló FC | BVSC | Budapest | Szőnyi Street Stadium | 9,000 |
| Debreceni VSC-Epona | Debrecen | Debrecen | Oláh Gábor utcai stadion | 9,640 |
| Diósgyőri FC | Diósgyőr | Miskolc | DVTK Stadion | 11,300 |
| Dunaferr SE | Dunaújvaros | Dunaújváros | Stadion Eszperantó Út | 12,000 |
| Ferencvárosi TC | Ferencváros | Budapest | Albert Flórián Stadion | 18,100 |
| Gázszer FC | Gázszer | Akasztó | Stadler Stadium | 12,000 |
| Győri ETO FC | Győr | Győr | ETO Park | 16,000 |
| Haladás | Szombathely | Rohonci úti stadion | 12,000 | |
| III. Kerület FC-AT | III. Kerület | Budapest | Hévízi Street Stadium | 3,000 |
| Honvéd | Budapest | Bozsik Stadion | 10,000 | |
| MTK Hungária | MTK | Budapest | Hidegkuti Nándor Stadium | 12,700 |
| Nyírség-Spartacus | Nyíregyháza | Nyíregyháza | Városi Stadion | 16,500 |
| Siófok | Siófok | Révész Géza utcai stadion | 10,500 | |
| Budapest | Szusza Ferenc Stadion | 13,500 | ||
| Vasas DH | Vasas | Budapest | Illovszky Rudolf Stadion | 12,000 |
| Dunakanyar-Vác FC | Vác | Vác | Stadion Városi Vác | 10,500 |
| Videoton FC | Videoton | Székesfehérvár | Sóstói Stadion | 15,000 |
| Zalahús ZTE FC | ZTE | Zalaegerszeg | ZTE Aréna | 9,000 |
Personnel and kits
Note: Flags indicate national team as has been defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.| Team | Manager | Captain | Kit manufacturer | Shirt sponsor |
| BVSC |  |  | Nike | InterCity |
| Debrecen | | | Adidas | Epona, MÁV Rt., OTP Bank |
| Diósgyőr | | | Adidas | Borsod Brewery |
| Dunaújváros | | | Umbro | Dunaferr |
| Ferencváros |  | | Adidas | |
| Gázszer | | | Diadora | |
| Győr | | | Adidas | Rába |
| Haladás | | | Hummel | Steffl Bier |
| III. Kerület | | | Umbro | Auto Trader, Rocco Jeans |
| Kispest | | | Umbro | Ibusz |
| MTK | | | Nike | Fotex |
| Nyíregyháza | | | Adidas | Taurus |
| Siófok | | | Toti | |
| Újpest | | | Joma | Espon |
| Vasas | | | Lotto | Danubius Hotels |
| Vác | | | Adidas | Zollner |
| Videoton | | | Uhlsport | Videoton |
| ZTE | | | Adidas | Zalahús |