The National Basketball League (NBL) (in Bulgarian: Националната баскетболна лига) is the highest-level professional basketball league in Bulgaria.

The current league was founded in 2008, though the first-tier level existed since 1942 and was previously called the Bulgarian A Division.

The games in the NBL are played under FIBA rules.

The most successful team in NBL history is PBC Academic, which has won 26 national titles.

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