The Czech Republic National Basketball League (NBL) is the top-tier level professional basketball league in the Czech Republic. It is run by the Asociace Ligových Klubů. The league operates under a promotion and relegation system. The bottom two NBL teams from each season's standings are relegated to the 2nd-tier level 1. Liga, while the top two 1. Liga teams from each season's standings are promoted to the NBL. ERA Nymburk has won the most titles with 19.

Logos

Teams

The following are the teams in the 2023–24 season:

Performance by club

All–time national champions

''Total number of national champions won by Czech clubs. Table includes titles won during the Czechoslovak Basketball League (1929–1993).''

Playoff Finals

The champion is determined in a playoff, with the bottom two teams getting sent to the 1. liga.