Croatia Sesvete were league champions and were promoted to Prva HNL at the end of the previous season.
The season started on 23 August 2008 and ended on 30 May 2009.
In a two-legged promotion/relegation playoff between Inter Zaprešić (as 11th placed 1.
HNL team) and Hrvatski Dragovoljac (as 2.
The top scorers in the 2008–09 Druga HNL season were:[3]