Luxembourg was represented by the group Park Café, with the song 'Monsieur", at the 1989 Eurovision Song Contest, which took place on 6 May in Lausanne, Switzerland. For the first time since 1978 (and only the third time ever), broadcaster RTL organised a public national final rather than their usual method of internal selection.

The national final was held on 5 March at the RTL studios, hosted by Jean Octave and Manette Dupong. Park Café performed three songs with the winner chosen by a public televote.

On the night of the final Park Café performed 11th in the running order, following Sweden and preceding Denmark. At the close of voting "Monsieur" had received only 8 points (5 from France and 3 from Spain), placing Luxembourg 20th of the 22 entries. The Luxembourgian jury awarded its 12 points to the United Kingdom.

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