1965–66 National Football League (Ireland)

The 1965–66 National Football League was the 35th staging of the National Football League (NFL), an annual Gaelic football tournament for the Gaelic Athletic Association county teams of Ireland.

Longford won their first and (so far) only NFL title with wins over Galway in the "home" final and New York in the two-legged "World Championship." Longford had the first leg at Pearse Park and won easily. After the second leg, an angry crowd chased the New York team off the field due to their (perceived) rough play.

Divisions

 * Division I: 8 team. Split into two groups of four
 * Division II: 8 teams. Split into two groups of four
 * Division III: 8 teams. Split into two groups of four
 * Division IV: 8 teams. Split into two groups of four

Final
Longford win 21–17 on aggregate.