National Gay Flag Football League ( NGFFL) is a nonprofit LGBT flag football league, currently comprising 200 teams in 24 leagues in the United States and Canada.
The NGFFL was founded by Jim Buzinski and
Cyd Zeigler in 2002.  Teams compete in the national championship tournament to win the  Gay Bowl. The championship takes place annually over  Columbus Day weekend. The first tournament was held in 2002 at  Hollywood High School in  Los Angeles, California. It was a two-day event with teams from San Francisco, Boston, and Los Angeles competing. LA Motion won the first Gay Bowl. In 2003,  Boston hosted Gay Bowl III. The New England Patriots sent Andre Tippett to officiate the ceremonial coin toss. The  DC Gay Flag Football League won the Gay Bowl in 2003 and 2004. In 2005, Chicago Freeze won the Bowl.  
In 2016, the Gay Bowl held in
Washington, D.C. on the  National Mall. 
In 2017, the San Diego Bolts were the five-time defending champions of the tournament.
 In 2017, the  New England Patriots sponsored the Gay Bowl XVII. Additional sponsors included several Boston teams including the Red Sox,  Celtics, and the Bruins. This is the first time professional sports franchises have sponsored the Gay Bowl.  Other sponsors, of the 35 total, include  United Airlines, Fidelity Investments, Sheraton Hotels and UPS. The tournament took place at Progin Park in  Lancaster, Massachusetts. There were three divisions in the tournament, Open A, Open B, and Women's. The New York Warriors won the A-Division Gay Bowl XVII.  The Gay Bowl XVIII is scheduled take place in  Denver. 
Currently, 200 teams in 24 leagues in the United States and Canada are part of the NGFFL.
  DC Gay Flag Football League is one of the oldest members of the League. The NGFFL imposes a limit on the number of  heterosexual players at twenty percent on each team's roster for the Gay Bowl. This is enforced using the honor system. 
The NGFFL was the subject of the 2015 documentary
. It features several people including F(l)ag Football Wade Davis, Cyd Zeigler, and Brenton Metzler.  
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