2005–06 Croatian Second Football League

The 2005–06 Druga HNL (also known as 2. HNL) season was the 15th season of Croatia's second level football since its establishment in 1992. The league was contested in two regional groups (North Division and South Division), with 12 clubs each. This was the last season under that format as the following season featured united Druga HNL with 16 teams. Mosor were originally relegated but were reprieved so that the following season has 16 clubs.

2005–06 Croatian Second Football League

The 2005–06 Druga HNL (also known as 2. HNL) season was the 15th season of Croatia's second level football since its establishment in 1992. The league was contested in two regional groups (North Division and South Division), with 12 clubs each. This was the last season under that format as the following season featured united Druga HNL with 16 teams. Mosor were originally relegated but were reprieved so that the following season has 16 clubs.