| Competition: | ntfl |
| Year: | 2005–06 |
| Teams: | 7 |
| Premiers: | Darwin |
| Count: | 23 |
| Minor Premiers: | St Marys |
| Mpcount: | 26 |
| Wooden Spooners: | Southern Districts |
| Wscount: | 4 |
| Prevseason: | 2004 |
| Nextseason: | 2006 |
The 2005–06 NTFL season was the 85th season of the Northern Territory Football League (NTFL).[1]
Darwin won their 23rd premiership title while defeating St Marys in the grand final by 42 points.