Public holidays in Denmark are the holidays recognised in law in Denmark. The Danish closure law, or , requires larger retail stores to be closed on all public holidays, as well as Constitution Day (5 June), Christmas Eve (24 December) and New Year's Eve (31 December) after 15:00, but those three additional days are not considered public holidays, as non-retail employees do not get a day off.
Some of these days derive from politics, and some from Roman Catholic traditions that predate the current national church. Some are simply the Scandinavian tradition of starting the celebrations of a special day on the evening before the actual day.
Although 1 May (May Day) is not an official public holiday in Denmark, it is commonly observed by workers in the public sector and trade unions. In cities like Copenhagen, especially in Fælledparken, the day is marked with public speeches, music, and community gatherings.