List of National League (ice hockey) seasons

This article provides a comprehensive list of seasons played in the National League (NL), the highest tier of professional ice hockey in Switzerland. The National League has been in operation under various names and structures since its inception in 1937. This list details each season, typically including the league champion, regular season standings, and other notable events or changes to the league format. Prior to 2017, the league was known as the Nationalliga A (NLA).

Each season entry will typically include:

• Season Year: The year the season took place (e.g., 2022-23).
• League Champion: The team that won the championship playoff series.
• Regular Season Winner: The team that finished with the most points during the regular season.
• Other Notable Information: Any significant changes to league rules, team additions or relocations, or major events that occurred during the season.

The league's history showcases the dominance of various clubs over time, as well as the evolving nature of professional ice hockey in Switzerland. The list includes links where appropriate to individual season pages with more detailed information when available. The information in this list is compiled from various sources including official league publications, hockey databases, and news archives.