1942–43 OB I bajnoksag season

The 1942–43 OB I bajnokság season was the seventh season of the OB I bajnokság, the top level of ice hockey in Hungary. Four teams participated in the final round, and BBTE Budapest won the championship.

Gruppe Budapest

 * BBTE Budapest and BKE Budapest qualified for final round, Ferencvárosi TC failed to qualify.

Erdély Group

 * Marosvásárhelyi SE and Kolozsvári KE qualified for final round.

Semifinals

 * BBTE Budapest - Marosvásárhelyi SE 5:4
 * BKE Budapest - Kolozsvári KE 2:0

Final

 * BBTE Budapest - BKE Budapest