"Ain't My Fault" is a song by Swedish singer Zara Larsson. It was released on 2 September 2016, by Record Company TEN, Epic Records, and Sony Music Entertainment, as the third single from her upcoming second and international debut studio album, So Good. The official remix features American rapper Lil Yachty.

In an interview with Shazam, Larsson said about the first version of the song: "The topic is me talking to a girl about her man, and I basically stole her man, and I'm like, 'It's not my fault that I'm better you'." The song was written in a few hours with MNEK for fun and never intended as a single, but when the studio loved it, her reaction was, "Whoa whoa whoa I can't sing this." So she changed the lyrics of the song to reflect her values: "I would never be proud of stealing a girl's man and sing about it, it would be very not me."

Robbie Daw of Idolator stated the song is "a sexy departure from the somber dulcet tones of 'Never Forget You' and the sassy pop swagger of 'Lush Life'" and went on to call it a "Rihanna-esque banger" and a "saucy gem".Entertainment Weekly's Nolan Feeney called the song "bold" and "club-ready".

^*sales figures based on certification alone
^{^}shipments figures based on certification alone

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