The 1977–78 OB I bajnokság season was the 41st season of the OB I bajnokság, the top level of ice hockey in Hungary. Four teams participated in the league, and Ferencvarosi TC won the championship.
| Club | GP | W | T | L | Goals | Pts | ||
|---|---|---|---|---|---|---|---|---|
| 1. | 18 | 14 | 2 | 2 | 107:58 | 30 | ||
| 2. | 18 | 10 | 3 | 5 | 84:65 | 23 | ||
| 3. | 18 | 6 | 3 | 9 | 71:101 | 15 | ||
| 4. | 18 | 2 | 0 | 16 | 49:87 | 4 |