"Young Girls" is a song by American singer-songwriter Bruno Mars. It was composed by Bruno Mars, Philip Lawrence and Ari Levine, Jeff Bhasker, and Emile Haynie for Mars' second studio album Unorthodox Jukebox (2012). "Young Girls" is a midtempo pop ballad, which incorporates elements of doo-wop, and reminiscent of the song "It Will Rain" and Lana Del Rey's work. Its music is largely based on drums, synths, piano and "bits of" electronic music. "Young Girls" was released as the first promotional single and later as the fifth overall single from Unorthodox Jukebox, being first serviced to Contemporary hit radio in Australia on November 26, 2013.

It received generally mixed to positive reviews. Many music critics noted the complex instrumental and praised Mars' vocals on the record. Its lyrics, detail the fact of the singer being unable to resist to his attraction to young girls were met with criticism; with reviewers calling it a "recognizing sin" and "impassioned shame". The single was recognized as the Best Pop of 2013 at the MelOn Music Awards. Commercially, "Young Girls" charted in some countries, along with the released of its parent album, such as South Korea, where it reached number one, United Kingdom and Canada. Before it was cancelled as the second single it peaked in Australia and New Zealand at 62 and 23, respectively. As the fifth single it reached the position of 19 in Canada and 32 in the United States. It was certified gold by the Recording Industry Association of America (RIAA), denoting digital sales of over half a million copies in the US. The track was performed live on Saturday Night Live and occasionally on the Moonshine Jungle Tour (2013-2015).

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