The 2020–21 National League season was the 83rd season of Swiss professional ice hockey and the fourth season as the National League (NL). ZSC Lions were the defending regular season winners. Due to the 2020 coronavirus outbreak in Switzerland there was no defending champion as the previous season's playoffs were cancelled. Due to the 2019–20 league qualification series also being cancelled, the participating teams remained the same as the previous season. EV Zug swept Genève-Servette HC 3-0 in the final to win its first NL title since 1998.