Extreme Football League

Extreme Football League can mean:

• Xtreme Football League, a planned indoor football league for 1999 that would merge with af2 in 2000
• X League (women's football), a women's football league in the United States
• XFL (2001), a professional American football league in the United States that played for one season in 2001
• XFL (2020), the second incarnation of the league that began play in 2020