2004 National Indoor Football League season

The 2004 National Indoor Football League season was the fourth season of the National Indoor Football League. The league champions were the Lexington Horsemen, who defeated the Sioux Falls Storm in Indoor Bowl IV.

Standings

 * Green indicates clinched playoff berth
 * Purple indicates division champion
 * Grey indicates best conference record

Round 1
Pacific Conference
 * Utah 59, Tri-City 42
 * Omaha 46, Sioux City 40

Atlantic Conference
 * Lexington 54, Atlantic City 25
 * Fort Wayne 45, Show-Me 28

Quarterfinals
Pacific Conference
 * Sioux Falls 65, Utah 41
 * Billings 68, Omaha 59

Atlantic Conference
 * Ohio Valley 36, Fort Wayne 35
 * Lexington 70, Houma Bayou 63

Semifinals
Pacific Conference
 * Sioux Falls 44, Billings 13

Atlantic Conference
 * Lexington 35, Ohio Valley 34

Indoor Bowl IV

 * Lexington 59, Sioux Falls 38