The 2018–19 Denmark Series was the 54th season of the Denmark Series which is a Danish football competition featuring amateur clubs. It is the fourth tier of the Danish football league system. The competition is divided in four groups of ten teams each, based on geographical location. The winner of each group will be promoted to the 2019–20 Danish 2nd Divisions. Relegation from the Denmark Series is wholly dependent on clubs relegating from the Danish 2nd Division; again, based on their geographical location.