The ('Third Class') is the eighth tier of football in the Netherlands and the sixth tier of Dutch amateur football. Starting in the 2026/27 season, the Royal Dutch Football Association (KNVB) is introducing mixed classifications for both the second and third classes of amateur football, putting Saturday and Sunday teams in the same pools.
Previously, the league was divided into 37 divisions, 20 played on Saturday and 17 on Sunday. Each division consists of 14 teams. The champions are promoted to the Tweede Klasse, the teams finishing 13th and 14th are relegated to the Vierde Klasse. Each season is divided into a number of periods (). The winner of these periods qualify for promotion playoffs, provided they finish in the top nine overall in the season. The teams finishing 12th in the final rankings play relegation playoffs.
Derde Klasse divisions DistrictSaturday divisionSunday divisionWest IDerde Klasse ADerde Klasse BDerde Klasse CDerde Klasse DDerde Klasse ADerde Klasse BDerde Klasse CWest IIDerde Klasse ADerde Klasse BDerde Klasse CDerde Klasse DSouth IDerde Klasse ADerde Klasse BDerde Klasse CDerde Klasse DDerde Klasse ADerde Klasse BDerde Klasse CDerde Klasse DSouth IIDerde Klasse ADerde Klasse BDerde Klasse CDerde Klasse DEastDerde Klasse ADerde Klasse BDerde Klasse CDerde Klasse DDerde Klasse ADerde Klasse BDerde Klasse CNorthDerde Klasse ADerde Klasse BDerde Klasse CDerde Klasse DDerde Klasse ADerde Klasse BDerde Klasse C
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