No, citizens of a Schengen country do not need ETIAS for Denmark, as Denmark is in the EU and part of the Schengen Area. The Schengen Area is comprised of 22 European Union countries, including Denmark, and 4 non-EU countries: Iceland, Liechtenstein, Norway, and Switzerland.
All countries within the Schengen zone have abolished all passport control and other types of border control within their mutual borders. This means that citizens of Denmark do not need a visa to travel to other Schengen member countries.
Citizens of Schengen countries are permitted free movement over Denmark’s borders and do not need a visa to work in Denmark. They are also not required to meet any visa requirements to live in Denmark for an extended period of time.
However, by the end of 2022, it is expected that citizens of Europe who are not part of the Schengen Area will be required to apply for an ETIAS visa waiver to travel to Denmark for short stays. This includes EU countries who maintain their own visa policies, such as Ireland and the United Kingdom.
Once the electronic visa waiver is implemented, it will also be necessary for non-European citizens who are currently visa-exempt for the Schengen Area to register for an ETIAS Denmark for short stays. This includes countries such as the United States, Canada, Mexico, and New Zealand, among others.
ETIAS is not a visa. Those not eligible to apply for an ETIAS for Denmark are required to apply for a Denmark Schengen visa by making an appointment at the nearest Danish diplomatic mission. It is necessary to download, print, and complete a Denmark visa application to bring along to the appointment.
It is also necessary for the embassy visa to bring a range of supporting documentation to the appointment depending on the type of Schengen visa the applicant requires. Danish tourist visa requirements involve supplying proof of sufficient funds for the intended stay, any hotel reservations made for Denmark, and a travel itinerary for the trip, among other supporting documents.