The 2012–13 OB I bajnoksag season is the 76th season of the OB I bajnoksag, the top level of ice hockey in Hungary. The league proper was not contested this season, as four of the top Hungarian teams competed in the multi-national MOL Liga. The top-ranked Hungarian team in the league was crowned national champions. Dab.Docler, who won the MOL Liga, was recognized as Hungarian champion this year.