| 2006 NIFL season | |
| League: | National Indoor Football League |
| Sport: | indoor American football |
| Season: | Regular season |
| Season Champs: | Fayetteville Guard |
| Playoffs: | Playoffs |
| Conf1: | Atlantic |
| Conf1 Champ: | Fayetteville Guard |
| Conf1 Runner-Up: | RiverCity Rage |
| Conf2: | Pacific |
| Conf2 Champ: | Billings Outlaws |
| Conf2 Runner-Up: | Rapid City Flying Aces |
| Finals: | Indoor Bowl VI |
| Finals Champ: | Billings Outlaws |
| Finals Runner-Up: | Fayetteville Guard |
| Seasonslist: | List of NIFL seasons |
| Seasonslistnames: | NIFL |
| Prevseason Link: | 2005 National Indoor Football League season |
| Prevseason Year: | 2005 |
| Nextseason Link: | 2007 National Indoor Football League season |
| Nextseason Year: | 2007 |
The 2006 National Indoor Football League season was the fifth season of the National Indoor Football League (NIFL). The league champions were the Billings Outlaws, who defeated the Fayetteville Guard in Indoor Bowl VI.
| Team | Overall | Conference | ||||
|---|---|---|---|---|---|---|
| Wins | Losses | Percentage | Wins | Losses | Percentage | |
| Atlantic Conference | ||||||
| Eastern Division | ||||||
| Fayetteville Guard | 13 | 1 | 0.929 | 6 | 0 | 1.000 |
| Montgomery Maulers | 7 | 7 | 0.500 | 3 | 3 | 0.500 |
| Charleston Sandsharks | 7 | 7 | 0.500 | 1 | 4 | 0.250 |
| Greensboro Revolution | 5 | 9 | 0.357 | 1 | 5 | 0.200 |
| Southern Division | ||||||
| Lakeland Thunderbolts | 12 | 2 | 0.857 | 4 | 1 | 0.800 |
| Osceola Outlaws | 8 | 6 | 0.571 | 1 | 3 | 0.333 |
| Florida Frenzy | 5 | 9 | 0.357 | 1 | 3 | 0.333 |
| West Palm Beach Phantoms | 1 | 5 | 0.200 | 1 | 1 | 0.500 |
| Northern Division | ||||||
| RiverCity Rage | 13 | 1 | 0.929 | 6 | 0 | 1.000 |
| Cincinnati Marshals | 8 | 6 | 0.571 | 3 | 3 | 0.500 |
| Dayton Bulldogs | 3 | 11 | 0.500 | 2 | 3 | 0.400 |
| Tennessee River Sharks | 3 | 11 | 0.214 | 1 | 4 | 0.200 |
| Pacific Conference | ||||||
| Northern Division | ||||||
| Billings Outlaws | 13 | 1 | 0.929 | 4 | 1 | 0.750 |
| Tri-Cities Fever | 9 | 5 | 0.643 | 3 | 2 | 0.600 |
| Big Sky Thunder | 2 | 12 | 0.143 | 0 | 4 | 0.000 |
| Western Division | ||||||
| Rapid City Flying Aces | 11 | 3 | 0.786 | 5 | 1 | 0.833 |
| Wyoming Cavalry | 8 | 6 | 0.571 | 3 | 2 | 0.600 |
| Lincoln Capitols/St. Joe Cyclones | 0 | 14 | 0.000 | 0 | 5 | 0.000 |
| Southern Division | ||||||
| Katy Copperheads | 11 | 3 | 0.786 | 6 | 1 | 0.857 |
| Beaumont Drillers | 8 | 6 | 0.571 | 6 | 2 | 0.750 |
| Arkansas Stars | 6 | 8 | 0.429 | 1 | 4 | 0.250 |
| Twin City Gators | 0 | 14 | 0.000 | 0 | 6 | 0.000 |