The Eurovision Song Contest 1984 was the 29th edition of the Eurovision Song Contest, held on 5 May 1984 in the Théâtre Municipal in Luxembourg City, Luxembourg. Organised by the European Broadcasting Union (EBU) and host broadcaster Radio Télévision Luxembourg (RTL), the contest was held in Luxembourg following the country's victory at the 1983 contest with the song "Si la vie est cadeau" by Corinne Hermès. The event was presented by Désirée Nosbusch, who, at 19 years old, remains the youngest person to have hosted the contest as of 2024.

The Grand Théâtre de Luxembourg, inaugurated in 1964 as the Théâtre Municipal de la Ville de Luxembourg is the city's major venue for drama, opera and ballet. It underwent renovation work in 2002–2003 resulting in substantial improvements to the stage technology, acoustics and lighting facilities.