"Broken-Hearted Girl" is a song recorded by American singer Beyoncé for her 2008 double album I Am... Sasha Fierce. Written by Beyoncé, Kenneth "Babyface" Edmonds, and production duo Stargate, it was initially a classic rhythm and blues song until Babyface changed the arrangement and chords. The track appears on the I Am... disc, the songs on which give a behind-the-scenes glimpse of Beyoncé's life stripped of her make-up and celebrity trappings. It is a midtempo R&B ballad accompanied by piano, strings, and drum machine beats. The lyrics describe heartache and the insecurities of love.

The song was initially announced as the sixth single from I Am... Sasha Fierce in the United States and the fourth elsewhere, but was replaced with "Sweet Dreams". Columbia Records released "Broken-Hearted Girl" outside the US on August 28, 2009. Critics praised Beyoncé's emotional vocals on the track but had divided opinions on the production. The single reached the top twenty on the singles charts of Australia, Brazil, the Czech Republic, Germany, and Ireland. Sophie Muller directed a monochrome music video in which Beyoncé's character reminisces about her relationship on a beach in Malibu, California. Beyoncé performed "Broken-Hearted Girl" on the I Am... World Tour (2009–10).

Beyoncé wrote "Broken-Hearted Girl" alongside the Norwegian production team Stargate, which consists of Tor Erik Hermansen and Mikkel Storleer Eriksen. The duo initially composed "Broken-Hearted Girl" as a traditional rhythm and blues song but co-writer Kenneth "Babyface" Edmonds changed one chord and added falsetto vocals. His recording a demo version preceded a rewrite of the backing track chords and the addition of a four-on-the-floor piano; the result was a "grand-piano ballad". According to the sheet music published by EMI, "Broken-Hearted Girl" was composed at a tempo of 84 beats per minute using common time in the key of D minor. Eriksen explained, "I suppose many of our songs are in minor keys. We probably lean towards more a moody, melodic expression. It's what comes most natural for us."

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