2022–23 Országos Bajnokság I (men's water polo)

The 2022–23 Országos Bajnokság I (also known as the E.ON Férfi OB I Bajnokság for sponsorship reasons, OB I in short), is going to be the 117th season of top-tier water polo in Hungary. A total of fourteen teams contest this season's league, which began on 8 October 2022 and will conclude on 18 May 2023.

FTC-Telekom won their twenty-fifth title.

Teams
The following 14 clubs compete in the OB I during the 2022–23 season:

Final standings
Sources: MVLSZ (C) Champion; (O) Play-off winner; (R) Relegated