"Alejandro" is a song by American recording artist Lady Gaga. It was released as the third single from her third extended play (EP) and second major release, The Fame Monster (2009). Co-written and produced by RedOne and inspired by her "Fear of Men Monster", the lyrics portray Gaga bidding farewell to her lovers. Musically, it is composed as a mid-tempo synthpop song.
Contemporary critics predominantly gave "Alejandro" positive reviews and noted influences from pop groups like ABBA, Ace of Base and Madonna. The song charted in the United Kingdom and Hungary due to digital sales following the album's release. Upon release, "Alejandro" charted again in the United Kingdom as well as in Australia, Canada, New Zealand, Sweden, and the United States while topping the Finnish, Polish, Russian, Bulgarian, and Romanian charts. "Alejandro" became Gaga's seventh successive single to reach the top-ten of the US Billboard Hot 100.
The accompanying music video was directed by fashion photographer Steven Klein and inspired by Gaga's love for her gay friends and admiration of gay love. Within the video, Gaga dances with a group of soldiers in a cabaret, interspersed with scenes of Gaga as a nun swallowing a rosary and near-naked men holding machine guns. The music video was controversial and received mixed reviews. Critics complimented its idea and dark nature while the Catholic League criticized Gaga for appearing to use blasphemy despite Klein dismissing the idea and claiming that the scene in question (the swallowing of Rosary beads) was Gaga's "desire to take in the Holy".
Gaga performed the song on the ninth season of American Idol and has performed it on all dates of The Monster Ball Tour. The song was also included on her 2012–13 tour The Born This Way Ball, as well as on her 2014 tour, ArtRave: The Artpop Ball.