NIFL meaning in Sports ?

Answer: What is National Indoor Football League mean?

The National Indoor Football League (NIFL) was a professional indoor football league in the United States. For their first six years, the league had teams in markets not covered by either the Arena Football League or its developmental league, AF2, however, that changed briefly with their expansion into AFL markets such as Atlanta, Denver, and Los Angeles, and AF2 markets such as Fort Myers and Houston. Green Bay Packers head coach Matt LaFleur, Buffalo Bills running back Fred Jackson, New Orleans Saints quarterback John Fourcade and Pittsburgh Steelers Super Bowl running back Bam Morris, all played in the NIFL. The league folded in 2008.

reference

Full Form	Category
National Institute of Faith Leadership	Community
National Institute For Literacy	Community
National Institute for Faith Leadership	Community
Northern Indiana Fuel and Light	General
Northeast Independent Football League	Sports
National Indoor Football League	Sports
Northern Ireland Football League	Sports