"Fuiste Tú" is a latin pop song by Guatemalan recording artist Ricardo Arjona, released on 7 February 2012 as the second single from his thirteenth studio album, Independiente (2011). Featuring additional lead vocals by Guatemalan singer Gaby Moreno, the song was written by Arjona, who produced it with longtime collaborators Dan Warner and Lee Levin under their stage name Los Gringos. Additional work on the recording was done by Puerto Rican singer-songwriter Tommy Torres.

Lyrically, "Fuiste Tú" rounds the concept of recreating "the battle on a couple when someone starts to say 'is the beginning of the end'". The song became the second consecutive single from Independiente to reach the top ten in the US Billboard Top Latin Songs, and the second single from the album to top both the Latin Pop Songs and Tropical Songs charts. "Fuiste Tú" performed well on several national charts from Latin America, including reaching #1 on Venezuela, and #6 on Mexico. The single was nominated for Song of the Year and Record of the Year at the 13th Annual Latin Grammy Awards.

An accompanying music video was released in February 2012. It was directed by Joaquín Cambré and filmed in Guatemala, and features several tropical locations from the country, including Antigua Guatemala, Río Dulce, the Atitlán lake, Semuc Champey and the Tikal ruins. Arjona commented that he chose to film the video there because he wanted to "show the real situation of that department", which is one of the poorest in the country, although being visited yearly by thousands of tourists. As of April 2017, the video has received over 440 million views on YouTube.

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