2017–18 NBL (Czech Republic) season

The 2017–18 National Basketball League (Czech Republic) season is the 25th season of the Czech NBL.

Format
Teams in regular season play home and away against every other team in a round-robin tournament, before being split into two groups of six teams for playing again home and away against the teams from the same group.

After the end of the stage after the first split, the six teams from to top group and the two first qualified teams from the bottom group joined the play-offs.

The other four teams would play again home and away against themselves for avoiding the relegation.

Teams
Olomoucko replaced Ariete Prostějov, which was relegated from the previous season and was dissolved.

Playoffs
Seeded teams played at home games 1, 2, 5 and 7, while the third place game where played with a best-of-three format, playing the seeded team the matches 1 and 3 at home, and the finals in a double-legged one.

Relegation playoffs

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