Denmark in the Eurovision Song Contest 2008

Denmark was represented at the Eurovision Song Contest 2008 with the song "All Night Long", written by Jacob Launbjerg, Svend Gudiksen, and Nis Bøgvad, and performed by Simon Mathew. The Danish participating broadcaster, Danmarks Radio (DR), organised the national final Dansk Melodi Grand Prix 2008 in order to select its entry for the contest. The national selection consisted of two televised semi-finals, a radio wildcard selection and a televised final. In the final, the winner was selected by regional televoting. "All Night Long" performed by Simon Mathew was the winner after gaining the most votes.

Denmark was drawn to compete in the second semi-final of the Eurovision Song Contest which took place on 22 May 2008. Performing during the show in position 13, "All Night Long" was announced among the 10 qualifying entries of the second semi-final and therefore qualified to compete in the final on 24 May. It was later revealed that Denmark placed third out of the 19 participating countries in the semi-final with 112 points. In the final, Denmark performed in position 16 and placed fifteenth out of the 25 participating countries, scoring 60 points.