Nationwide League One

The Nationwide League One (NLO) is the third-tier level of club football in Nigeria. It was formerly called the Nigerian Amateur League, but was renamed in 2012.

The league consists of 24 teams divided into two groups of 12. Each team plays each other team in their group once, home and away. The top two teams from each group qualify for the promotion playoffs, where the top two teams are promoted to the Nigeria National League.

The Nigerian Amateur League was founded in 1972. The league was originally divided into four regional groups, but this was reduced to two groups in 1987.