The 2004-05 NLA season was the 67th regular season of the Nationalliga A, the main professional ice hockey league in Switzerland.
The season started on September 17, 2004, the last League Qualification game was played on April 14, 2005.
Regular season
Final standings
Playoffs
Quarterfinals
| HC Lugano (1) vs. SC Bern (8)
|
| Date |
Away |
Home
|
| February 26 |
SC Bern 2 |
0 HC Lugano |
|
| March 1 |
HC Lugano 5 |
2 SC Bern |
|
| March 3 |
SC Bern 2 |
0 HC Lugano |
|
| March 5 |
HC Lugano 2 |
4 SC Bern |
|
| March 7 |
SC Bern 5 |
4 HC Lugano |
OT
|
| SC Bern wins series 4–1
|
|
|
| HC Davos (2) vs. SC Rapperswil-Jona (7)
|
| Date |
Away |
Home
|
| February 26 |
SC Rapperswil-Jona 2 |
6 HC Davos |
|
| March 1 |
HC Davos 2 |
1 SC Rapperswil-Jona |
OT
|
| March 3 |
SC Rapperswil-Jona 3 |
6 HC Davos |
|
| March 5 |
HC Davos 2 |
1 SC Rapperswil-Jona |
OT
|
| HC Davos wins series 4–0
|
|
| ZSC Lions (3) vs. HC-Ambri-Piotta (6)
|
| Date |
Away |
Home
|
| February 26 |
HC-Ambri-Piotta 3 |
5 ZSC Lions
|
| March 1 |
ZSC Lions 4 |
2 HC-Ambri-Piotta
|
| March 3 |
HC-Ambri-Piotta 2 |
1 ZSC Lions
|
| March 5 |
ZSC Lions 2 |
1 HC-Ambri-Piotta
|
| March 7 |
HC-Ambri-Piotta 2 |
6 ZSC Lions
|
| ZSC Lions wins series 4–1
|
|
|
| EV Zug (4) vs. Genève-Servette HC (5)
|
| Date |
Away |
Home
|
| February 26 |
Genève-Servette HC 2 |
3 EV Zug |
|
| March 1 |
EV Zug 4 |
2 Genève-Servette HC |
|
| March 3 |
Genève-Servette HC 1 |
3 EV Zug |
|
| March 5 |
EV Zug 3 |
2 Genève-Servette HC |
OT
|
| EV Zug wins series 4–0
|
|
Semifinals
| HC Davos vs. SC Bern
|
| Date |
Away |
Home
|
| March 12 |
SC Bern 1 |
2 HC Davos
|
| March 15 |
HC Davos 4 |
5 SC Bern
|
| March 17 |
SC Bern 1 |
2 HC Davos
|
| March 19 |
HC Davos 2 |
1 SC Bern
|
| March 22 |
SC Bern 2 |
0 HC Davos
|
| March 24 |
HC Davos 4 |
1 SC Bern
|
| HC Davos wins series 4–2
|
|
|
| ZSC Lions vs. EV Zug
|
| Date |
Away |
Home
|
| March 12 |
'EV Zug 3 |
1 ZSC Lions |
|
| March 15 |
ZSC Lions 4 |
1 EV Zug |
|
| March 17 |
EV Zug 1 |
4 ZSC Lions |
|
| March 19 |
ZSC Lions 3 |
2 EV Zug |
OT
|
| March 22 |
EV Zug 2 |
4 ZSC Lions |
|
| ZSC Lions wins series 4–1
|
|
Finals
| HC Davos vs. ZSC Lions
|
| Date |
Away |
Home
|
| March 31 |
ZSC Lions 6 |
4 HC Davos
|
| April 2 |
HC Davos 6 |
3 ZSC Lions
|
| April 4 |
ZSC Lions 2 |
3 HC Davos
|
| April 7 |
HC Davos 4 |
3 ZSC Lions
|
| April 9 |
ZSC Lions 2 |
3 HC Davos
|
| HC Davos wins series 4–1
|
|
Playout
Semifinals
| Kloten Flyers (9) vs. HC Lausanne (12)
|
| Date |
Away |
Home
|
| February 26 |
HC Lausanne 2 |
4 Kloten Flyers |
|
| March 1 |
Kloten Flyers 2 |
1 HC Lausanne |
|
| March 3 |
HC Lausanne 4 |
8 Kloten Flyers |
|
| March 5 |
Kloten Flyers 2 |
3 HC Lausanne |
OT
|
| March 7 |
HC Lausanne 1 |
6 Kloten Flyers |
|
| Kloten Flyers wins series 4–1
|
|
|
| Fribourg-Gottéron (10) vs. SCL Tigers (11)
|
| Date |
Away |
Home
|
| February 26 |
SCL Tigers 5 |
7 Fribourg-Gottéron
|
| March 1 |
Fribourg-Gottéron 2 |
5 SCL Tigers
|
| March 3 |
SCL Tigers 2 |
0 Fribourg-Gottéron
|
| March 5 |
Fribourg-Gottéron 2 |
3 SCL Tigers
|
| March 7 |
SCL Tigers 1 |
8 Fribourg-Gottéron
|
| March 10 |
Fribourg-Gottéron 2 |
5 SCL Tigers
|
| SCL Tigers wins series 4–2
|
|
Finals
| HC Lausanne vs. Fribourg-Gottéron
|
| Date |
Away |
Home
|
| March 15 |
HC Lausanne 4 |
5 Fribourg-Gottéron
|
| March 17 |
Fribourg-Gottéron 7 |
9 HC Lausanne
|
| March 19 |
HC Lausanne 3 |
7 Fribourg-Gottéron
|
| March 22 |
Fribourg-Gottéron 4 |
3 HC Lausanne
|
| March 24 |
HC Lausanne 2 |
5 Fribourg-Gottéron
|
| Fribourg-Gottéron wins series 4–1
|
|
League Qualification
| HC Lausanne vs. EHC Basel
|
| Date |
Away |
Home
|
| March 31 |
EHC Basel 5 |
4 HC Lausanne
|
| April 2 |
HC Lausanne 3 |
1 EHC Basel
|
| April 4 |
EHC Basel 3 |
4 HC Lausanne
|
| April 7 |
HC Lausanne 1 |
5 EHC Basel
|
| April 9 |
EHC Basel 2 |
0 HC Lausanne
|
| April 11 |
HC Lausanne 4 |
2 EHC Basel
|
| April 14 |
EHC Basel 4 |
0 HC Lausanne
|
| EHC Basel wins series 4–3
|
|