| Most recent season or competition: 2014 UIFL season | |
 Ultimate Indoor Football League logo | |
| Formerly | United Indoor Football League |
|---|---|
| Sport | Indoor football |
| Founded | 2010 |
| Founder | Michael Taylor Andrew Haines |
| First season | 2011 |
| Ceased | 2014 |
| President | Jim Krause |
| Country |  United States |
| Last champion(s) | Corpus Christi Fury |
| Most titles | Cincinnati Commandos Corpus Christi Fury Florida Tarpons & Saginaw Sting (1) |
| Sponsor(s) | Rawlings Conquest Sports Foundation Conquest Club Card ProSportsRecruit.com Trophy Awards La Quinta Inns & Suites |
| Related competitions | Champions Professional Indoor Football League Continental Indoor Football League Professional Indoor Football League |
| Official website | UIFLfootball.com |
The Ultimate Indoor Football League (UIFL) was a regional professional indoor football league that began its inaugural season on February 18, 2011[1] as the Ultimate Indoor Football League before playing as the United Indoor Football League in 2012, then switched back to "Ultimate" for the 2013 season. After the 2014 season, the league merged with X-League Indoor Football.