The Southern Arc Islands Football Association (abbreviated SAIFA) is the football association of the Southern Arc Islands. It is a member of FIFA and CONCACAF. It manages the Southern Arc Islands national football team (and its youth teams, including the U-20 team), and the nation's professional football clubs association, the Southern Arc Islands Association of Football Clubs, which runs competitions such as the Southern Arc Islands Football League, the Grand Football Cup and the Whitworth Shield. The SAIFA is also one of the main organizers of the annual Worldwide Cup hosted in the Southern Arc Islands, and since 2015 also the Worldwide Club Cup. The SAIFA itself is a part of the Southern Arc Islands Sports Association.

Its headquarters are in Arc City.