Denmark participated in the Eurovision Song Contest 2012 in Baku, Azerbaijan. The Danish entry was selected through Dansk Melodi Grand Prix 2012, a national selection organised by the Danish broadcaster DR. Soluna Samay represented Denmark with the song "Should've Known Better", which qualified from the first semi-final and went on to place 23rd in the final, scoring 21 points.

On 15 May 2011, one day after the 2011 Contest had been held in Germany, DR announced its participation in the Eurovision Song Contest 2012, to be held in Baku, Azerbaijan.

Potential entries could be submitted until 26 September 2011 at noon. A total of 678 songs were submitted to DR. According to the rules of the competition, 9-10 songs would be selected to compete in the final; 6 songs selected in open competition among the entries submitted and 3-4 wildcard entries invited on the basis of editorial considerations.

Dansk Melodi Grand Prix 2012 was held on 21 January 2012 in the Gigantium arena in Aalborg, which previously also hosted the 2006 and 2010 shows.

A line-up of 10 acts was announced on 5 January 2012. However, one of the selected finalist songs ("Nowhere" by Valen:tine) was disqualified after it was released before the date allowed by the European Broadcasting Union and thus breaking the rules. The song was not replaced.

The winning was chosen in two rounds of voting. In the first round, viewers and a Danish professional jury select the top 3 songs. The winner was then chosen among those three songs by the viewers, the Danish jury and four international professional juries, representing Azerbaijan, Germany, Norway and Russia. In both voting rounds, the viewers' votes accounted for 50% of the total score, while jury votes accounted for the rest.

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