The 1977–78 Nationalliga A season was the 40th season of the Nationalliga A, the top level of ice hockey in Switzerland. Eight teams participated in the league, and EHC Biel won the championship.
Standings
| Pl. | Team | GP | W | T | L | GF–GA | Pts |
|---|---|---|---|---|---|---|---|
| 1. | EHC Biel | 28 | 19 | 3 | 6 | 159:93 | 41 |
| 2. | SC Langnau | 28 | 19 | 2 | 7 | 158:98 | 40 |
| 3. | SC Bern | 28 | 17 | 4 | 7 | 162:95 | 38 |
| 4. | EHC Kloten | 28 | 14 | 3 | 11 | 114:105 | 31 |
| 5. | EHC Arosa | 28 | 11 | 3 | 14 | 96:98 | 25 |
| 6. | HC La Chaux-de-Fonds | 28 | 10 | 2 | 16 | 116:138 | 22 |
| 7. | HC Sierre | 28 | 8 | 4 | 16 | 103:162 | 20 |
| 8. | HC Ambrì-Piotta | 28 | 3 | 1 | 24 | 87:206 | 7 |