2025–26 Denmark Series

The 2025–26 Denmark Series is the 61st season of the Denmark Series, the fifth tier of the Danish football league structure organised by the Danish FA (DBU).

This season, the league is divided into four groups of ten teams each. After the regular season (18 rounds), the top five teams in the four groups are promoted to two promotion groups (east and west): the winners are promoted, and the two runners-up will have a play-off for the last spot in the 2026–27 Danish 3rd Division. In the two qualification groups (east and west), eight teams will play not to be relegated to Tier 6 level in season 2026–27.

The top five teams in the four regular groups are placed in the to two promotion groups (east and west) the winners of each group is promoted and the two runner-up will have a play-off for the last spot in the 2026–27 Danish 3rd Division

After a two leg playoff, the winner is promoted for the 3rd spot of the 2026–27 Danish 3rd Division season

The bottom five teams in the four regular groups are placed in the to two relegation groups (east and west) playing not to be relegated to Tier 6 level in season 2026–27. After 10 rounds, eight teams will be relegated.