The 2009–10 Dutch Basketball League (DBL) was the 50th season of the Dutch Basketball League, the highest professional basketball league in the Netherlands. GasTerra Flames dominated throughout the regular season and lost just three games. Zorg en Zekerheid Leiden player Danny Gibson was league top scorer and won the Most Valuable Player award. GasTerra Flames eventually won its third title in team history, by beating World Class Aviation Academy Giants 4–1 in the finals.