The Eurovision Song Contest 1989 was the 34th edition of the Eurovision Song Contest, held on 6 May 1989 at the Palais de Beaulieu in Lausanne, Switzerland, and presented by Jacques Deschenaux and Lolita Morena. It was organised by the European Broadcasting Union (EBU) and host broadcaster Télévision suisse romande (TSR) on behalf of the Swiss Broadcasting Corporation (SRG SSR), who staged the event after winning the 1988 contest for Switzerland with the song "Ne partez pas sans moi" by Céline Dion.

Broadcasters from twenty-two countries participated in the contest, with Cyprus returning after a one-year absence. Among the participating artists were the two youngest artists to have ever participated in the contest, 12-year-old Gili Netanel and 11-year-old Nathalie Pâque representing Israel and France, respectively; the inclusion of the young performers led to some controversy in the run-up to the event, including calls for their exclusion from the contest, and although no action was taken by the organisers of this event it did result in a rule change for the following year's contest.

The winner was Yugoslavia with the song "Rock Me", composed by Rajko Dujmić, written by Stevo Cvikić and performed by the group Riva. This was Yugoslavia's first contest victory in twenty-four attempts. The United Kingdom, Denmark, Sweden, and Austria rounded out the top five positions; the United Kingdom and Denmark placed second and third respectively for a second consecutive year, and Austria finished in the top five for the first time since 1976. Finland gained its best result since 1975, while Ireland and Iceland achieved its worst ever placings to date, placing eighteenth and twenty-second respectively, with Iceland ultimately earning nul points and coming last for the first time.

The 1989 contest took place in Lausanne, Switzerland, following the country's victory at the 1988 contest with the song "Ne partez pas sans moi" performed by Céline Dion. It was the second time that Switzerland had hosted the event, following the inaugural edition of the contest held in 1956 in Lugano.

The chosen venue was the Palais de Beaulieu, a convention and exhibition centre. The contest took place in the Hall 7 of the Palais, also known as the Halle des Fêtes, which was temporarily renamed Salle Lys Assia in honour of Switzerland's first Eurovision winning artist. An audience of around 1,600 people could occupy the Salle Lys Assia during the contest. Over a dozen cities were reported to have applied to host the contest, with Lausanne winning out due to its combination of a suitable production venue, logistical infrastructure availability, and proximity to an international airport.

Twenty-two countries participated in the 1989 contest, with the twenty-one countries from the previous year's event being joined by Cyprus, returning after a one-year absence.

For the first time, Switzerland sent an entry in Romansh, the smallest of Switzerland's four national languages.

No artists competing in the 1989 contest had previously taken part as lead artists in previous events, however, two of the artists had previously performed in the contest in past editions for the same country: Justine Pelmelay had been one of the backing vocalists supporting the Netherlands in 1988, and Marianna had also performed as a backing vocalist for Greece in 1987. Additionally, Søren Bundgaard who had represented Denmark in 1984, 1985, and 1988, as a member of the duo Hot Eyes, was one of Birthe Kjær's backing performers in this year's event.