Campeonato Nacional juniores B

The Campeonato Nacional Juniores B is the top level amateur football league for under-17 players in Portugal. It is organized by the Portuguese Football Federation (FPF).

The Campeonato Nacional Juniores B was first played in 1962. The most successful team in the history of the competition is Sporting CP, which has won the title 22 times.

The Campeonato Nacional Juniores B is played in two phases. In the first phase, the teams are divided into two groups of 12 teams. The top four teams from each group qualify for the second phase, which is a round-robin tournament. The winner of the second phase is the champion.