| 2005 NIFL season | |
|---|---|
| League | National Indoor Football League |
| Sport | indoor American football |
| Regular season | |
| Season champions | Odessa Roughnecks |
| Playoffs | |
| Atlantic champions | Rome Renegades |
| Atlantic runners-up | Cincinnati Marshals |
| Pacific champions | Tri-Cities Fever |
| Pacific runners-up | Odessa Roughnecks |
| Indoor Bowl V | |
| Champions | Tri-Cities Fever |
| Runners-up | Rome Renegades |
The 2005 National Indoor Football League season was the fifth season of the National Indoor Football League (NIFL). The league champions were the Tri-Cities Fever, who defeated the Rome Renegades in Indoor Bowl V.