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					Swiss professional ice hockey season
The 1997–98 NLA season was the 60th regular season of the Nationalliga A.
| 
| EV Zug (1) vs. SC Rapperswil-Jona (8) |  
| Away | Home |  
| SC Rapperswil-Jona 6 | 4 EV Zug |  |  
| EV Zug 5 | 2 SC Rapperswil-Jona |  |  
| SC Rapperswil-Jona 0 | 3 EV Zug |  |  
| EV Zug 2 | 5 SC Rapperswil-Jona |  |  
| SC Rapperswil-Jona 3 | 6 EV Zug |  |  
| EV Zug 4 | 5 SC Rapperswil-Jona | OT |  
| SC Rapperswil-Jona 2 | 3 EV Zug | OT |  
| EV Zug wins series 4–3 |  |  | 
| Fribourg-Gottéron (2) vs. Kloten Flyers (7) |  
| Away | Home |  
| Kloten Flyers 4 | 0 Fribourg-Gottéron |  |  
| Fribourg-Gottéron 2 | 1 Kloten Flyers |  |  
| Kloten Flyers 2 | 3 Fribourg-Gottéron |  |  
| Fribourg-Gottéron 0 | 4 Kloten Flyers |  |  
| Kloten Flyers 2 | 1 Fribourg-Gottéron |  |  
| Fribourg-Gottéron 2 | 1 Kloten Flyers | OT |  
| Kloten Flyers 0 | 1 Fribourg-Gottéron |  |  
| Fribourg-Gottéron wins series 4–3 |  | 
| 
| HC Davos (3) vs. HC Lugano (6) |  
| Away | Home |  
| HC Lugano 1 | 4 HC Davos |  |  
| HC Davos 3 | 9 HC Lugano |  |  
| HC Lugano 3 | 6 HC Davos |  |  
| HC Davos 1 | 4 HC Lugano |  |  
| HC Lugano 6 | 3 HC Davos |  |  
| HC Davos 4 | 3 HC Lugano | n.P. |  
| HC Lugano 2 | 4 HC Davos |  |  
| HC Davos wins series 4–3 |  |  | 
| HC Ambri-Piotta (4) vs. SC Bern (5) |  
| Away | Home |  
| SC Bern 2 | 5 HC Ambri-Piotta |  |  
| HC Ambri-Piotta 4 | 7 SC Bern |  |  
| SC Bern 4 | 3 HC Ambri-Piotta | OT |  
| HC Ambri-Piotta 3 | 2 SC Bern |  |  
| SC Bern 1 | 4 HC Ambri-Piotta |  |  
| HC Ambri-Piotta 1 | 2 SC Bern |  |  
| SC Bern 2 | 3 HC Ambri-Piotta |  |  
| HC Ambri-Piotta wins series 4–3 |  | 
| 
| EV Zug vs. HC Ambri-Piotta |  
| Away | Home |  
| HC Ambri-Piotta 2 | 4 EV Zug |  |  
| EV Zug 2 | 7 HC Ambri-Piotta |  |  
| HC Ambri-Piotta 5 | 3 EV Zug |  |  
| EV Zug 3 | 2 HC Ambri-Piotta | OT |  
| HC Ambri-Piotta 7 | 1 EV Zug |  |  
| EV Zug 5 | 0 HC Ambri-Piotta |  |  
| HC Ambri-Piotta 2 | 7 EV Zug |  |  
| EV Zug wins series 4–3 |  |  | 
| Fribourg-Gottéron vs. HC Davos |  
| Away | Home |  
| HC Davos 5 | 2 Fribourg-Gottéron |  
| Fribourg-Gottéron 2 | 4 HC Davos |  
| HC Davos 2 | 6 Fribourg-Gottéron |  
| Fribourg-Gottéron 4 | 6 HC Davos |  
| HC Davos 5 | 1 Fribourg-Gottéron |  
| HC Davos wins series 4–1 |  | 
| 
| EV Zug vs. HC Davos |  
| Away | Home |  
| HC Davos 1 | 4 EV Zug |  |  
| EV Zug 2 | 3 HC Davos | OT |  
| HC Davos 4 | 11 EV Zug |  |  
| EV Zug 2 | 4 HC Davos |  |  
| HC Davos 3 | 4 EV Zug |  |  
| EV Zug 5 | 2 HC Davos |  |  
| EV Zug wins series 4–2 |  | 
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| The 1939–40 season was not held due to the outbreak of World War II . |