The Denmark Series (Danish: Danmarksserien) is the 4th tier of football in Denmark. Teams are divided into four groups of ten. The top team in each group is promoted to the Danish 2nd Division Group 1 or Group 2 as is appropriate for each club geographically. The bottom three teams in each group are relegated to the regional Copenhagen Series, Zealand Series, Lolland-Falster Series, Funen Series, or Jutland Series as is appropriate for each club geographically.
|Number of teams||40|
|Level on pyramid||4|
|Promotion to||2nd Division Group 1 or 2|
|Relegation to||Copenhagen Series|
|Domestic cup(s)||Danish Cup|
|Current champions||Holbæk B&I|
Clubs in the Denmark Series are participants in the Danish Cup tournament. The reserve teams of top-flight Danish Superliga and second-tier Danish 1st Division clubs are allowed to play in the Denmark Series, but 1st Division reserve teams cannot win promotion, as they must stay at least two leagues below their first team squads.