1999–2000 OB I bajnoksag season

The 1999–2000 OB I bajnokság season was the 63rd season of the OB I bajnokság, the top level of ice hockey in Hungary. Seven teams participated in the league, and Dunaferr SE Dunaujvaros won the championship.

3rd place

 * Gyor HC - Alba Volán Székesfehérvár 4:13

Final

 * Dunaferr SE Dunaújváros - Ferencvárosi TC 4:0 (5:0, 3:2, 5:3, 4:1)