|Country(ies)||United States Canada|
The North American Indoor Football League was an indoor football league planning to start play in 2007. The league announced in January 2007 that its founders would instead support the Continental Indoor Football League.
The NAIFL started after a failed attempt by Greens Worldwide Incorporated, owner of the outdoor North American Football League, to purchase the American Indoor Football League in early 2006. The Ultimate Indoor Football League was a breakaway from the NIFL. Both were proposed as 8-team leagues, with plans to start in spring 2007. The leagues merged in the fall of 2006.
Only two teams had publicly announced their entry to the league. The Arkansas Stars, a team that played their inaugural season in the NIFL, later announced that the UIFL had separated from the merger and was planning to play in 2007. The other team, the Conroe Storm, moved to the APFL. According to the defunct UIFL website, seven teams had committed to play, with more to come.