The 2025 New Zealand Men's National League (known as the Dettol Men's National League for sponsorship reasons) is the fifth scheduled season of the National League since its restructuring in 2021; the 2021 National League was cancelled due to the COVID-19 pandemic in northern regions. 32 clubs compete in the competition, with four qualifying from the Northern League, three qualifying from the Central League and two qualifying from the Southern League for the National Championship phase. Auckland FC Reserves and Wellington Phoenix Reserves qualify automatically for the championship phase.
Each team can field a maximum of four foreign players as well as one additional foreign player who has Oceania Football Confederation nationality. 
Over the course of the season, each team must also ensure players aged 20 or under account for 10% of available playing minutes.
The qualifying league fixtures were announced on 28 February 2025. The Northern League starts on 15 March 2025 with the Central and Southern leagues starting on the 29 March. The Northern and Central leagues concluded on 30 August 2025 with the Southern League concluding on 31 August 2025.
Qualifying leagues.
2025 Northern League.
The 2025 Northern League is the 60th season, 5th season since the restructure of the leagues, of premiership football in the Upper North Island. The League started on 15 March and finishes on 30 August, with the top four side qualifying for the National League Championship along with the already qualified Auckland FC Reserves.
Northern League teams.
Twelve teams are competing in the league – the top ten teams from the previous season, one team promoted from the NRFL Championship and Auckland FC Reserves. The promoted team is Fencibles United. It is both Auckland FC Reserves's and Fencibles United's first season in the National League. They replaced Melville United and Hamilton Wanderers (both relegated after a four-year Northern League spell).
Northern League table.
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2025 Central League.
The 2025 Central League is the 29th season, 5th season since the restructure of the leagues, of premiership football in the Lower North Island. The League starts on 29 March and finishes on 30 August, with the top three side qualifying for the National League Championship along with the already qualified Wellington Phoenix Reserves.
Central League teams.
Ten teams are competing in the league – the top nine teams from the previous season and the one team promoted from the 2024 play-off between the winners of the Central Federation League and the Capital Premier. The winner of the play-off was Upper Hutt City. This is their first season in the Central League, since New Zealand football's restructuring in 2021. They replaced Stop Out (relegated to the Central Federation League after two seasons in the Central League).
Central League table.
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2025 Southern League.
The 2025 Southern League is the 4th season of a full 10 team league, 5th season since the restructure of the leagues, of a South Island wide football league. The League started on 29 March and finishes on 31 August, with the top two side qualifying for the National League Championship.
Southern League teams.
Ten teams are competing in the league – the top nine teams from the previous season and the winner of the Southern League play-offs. The promoted team is Wānaka. This is their first season in the Southern League. They replaced FC Twenty 11 (relegated to the Canterbury Premiership League after their second season in the Southern League).
Southern League managerial changes.
"Note: Some cases use first/last match coached"
Southern League table.
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Qualified clubs.
There are 11 men's National League Championship qualifying spots (4 plus Auckland FC Reserves for the Northern League, 3 plus Wellington Phoenix Reserves for the Central League and 2 for the Southern League).
Championship phase.
League table.
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