2003 National Indoor Football League season

The 2003 National Indoor Football League season was the third season of the National Indoor Football League (NIFL). The league champions were the Ohio Valley Greyhounds, who wrapped up a perfect season by defeating the Utah Warriors in Indoor Bowl III and becoming the first team in league history to win back-to-back titles.

Standings

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

Playoffs
Round 1
 * Ohio Valley 51, Lexington 42
 * Lake Charles 44, Houma 19
 * Omaha 72, Bismarck 49
 * Utah 68, Sioux Falls 55

Semifinals
 * Ohio Valley 43, Lake Charles 41
 * Utah 62, Omaha 51

Indoor Bowl III
 * Ohio Valley 45, Utah 37