"Mi Marciana" (English: My Martian) is a song recorded by the Spanish singer-songwriter Alejandro Sanz. It was released as the third single from his ninth studio album (2012). The song was released for digital download on December 6, 2012 .

Mi Marciana is the third single of Sanz's ninth studio album and was written by Alejandro Sanz and co-produced by Sanz and Colombian producer, musician, and songwriter, Julio Reyes.
Sanz received a Record of the Year and Song of the Year nominations at the 14th Latin Grammy Awards for the song. The song was also nominated for a 2014 Lo Nuestro Award for Video of the Year and Pop Song of the Year.

Sanz performed this song on several stages including his . One of the best performances occurred on December 12, 2012, on the program La Voz España, when he performed with the four finalists of the show.

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