The 2002 Allianz National Football League, the 71st annual Gaelic football tournament, was sponsored by Allianz and included teams from Ireland's Gaelic Athletic Association county teams. This was the first NFL season to take place in a single calendar year. Tyrone beat Cavan in the Division 1 final, while Kerry took Division Two.
The top 16 teams were drawn into Divisions 1A and 1B. The other 16 teams were drawn into Divisions 2A and 2B. Each team played all the other teams in its section once: either home or away. Teams earned 2 points for a win and 1 for a draw.
The top two teams in Divisions 1A and 1B progressed to the Division 1 semi-finals while the bottom two teams in Divisions 1A and 1B were relegated. The top two teams in Divisions 2A and 2B progressed to the Division 2 semi-finals and were promoted to Division 1A and 1B, respectively.
If two or more teams are level on points, points difference was used to rank the teams.