| 2011–12 National League A season | |
|---|---|
| League | National League A |
| Sport | Ice hockey |
| Number of games | 50 |
| Number of teams | 12 |
| Regular Season | |
| Best Record | EV Zug |
| Runners-up | HC Davos |
| Top scorer |
Damien Brunner (EV Zug) |
| Playoffs | |
| Semi-final #1 champions | ZSC Lions |
| Semi-final #1 runners-up | EV Zug |
| Semi-final #2 champions | SC Bern |
| Semi-final #2 runners-up | Fribourg-Gottéron |
| National League A Championship | |
| Champions | ZSC Lions |
| Runners-up | SC Bern |
The 2011–12 National League A season was the fifth ice hockey season of the National League A since the reorganization of the Swiss league. 12 teams participated in the league, which was won by EV Zug.
The bottom 4 teams of the National League A will compete in a losing team advances tournament to determine if they should stay in the League. The loser of this tournament will compete against the champions of the National League B to determine which league they will play in next season.
Ambrì-Piotta would later defeat SC Langenthal, Champions of the National League B, 4–1 to remain in the National League A