"Marcia Baïla" is a 1984 song recorded by the French duet Rita Mitsouko. It was the third single from their first album, Rita Mitsouko, and was released in April of that year. Dedicated to a dancer with the band who died in 1981, this song was a big hit both in France and abroad and can be considered as being one of the band's signature songs.

The song was composed by both members of the group, Catherine Ringer and Fred Chichin. It is a tribute to Argentine dancer and choreographer Marcia Moretto, who participated in the band's tours before her death from breast cancer in 1981 at the age of 32. With this song, the group enjoyed extensive media coverage; indeed, "the music video for the single [was] a success which result[ed] in repeated and enthusiastic broadcastings on the television, the extravagance of the group express[ing] itself as well in concerts as during its cathodic performances." Philippe Gautier directed the vibrant and widely viewed music video that accompanies the song, and gathered in a global concept representative of the arts of its time, Jean-Paul Gaultier and Thierry Mugler for the costumes and graffiti painters from the Figuration libre movement as well as Xavier Veilhan for the set design. Despite its Spanish title, the lyrics are in French.

In France, the song had a long chart trajectory, remaining on the Top 50 charts for 29 weeks. It debuted at #33 on April 27, 1985, and climbed regularly until it peaked at #2 for three consecutive weeks. In all, it spent 17 weeks in the Top Ten.
"Marcia Baïla" is currently the 187th best-selling single of all time in France, with about 800,000 units sold. The song was Rita Mitsouko's first big hit and propelled them to considerable fame.

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