"Mother Knows Best" is a song written by composer Alan Menken and lyricist Glenn Slater for Walt Disney Pictures' 50th animated feature film Tangled (2010). Included on the film's official soundtrack, "Mother Knows Best" is a musical theatre-inspired pop and jazz ballad performed by American actress and singer Donna Murphy in her animated role as Mother Gothel, the film's villain. Incorporating a series of passive-aggressive insults into its lyrics, the song serves as Gothel's attempt to frighten Rapunzel into remaining in their secluded tower despite her constant requests to see the floating lanterns so that she can continue exploiting her hair's regenerating abilities to remain youthful. "Mother Knows Best" is eventually reprised in a more sinister, vengeful manner by Gothel after Rapunzel, having left the tower, openly defies her for the first time.

Menken and Slater deliberately wrote "Mother Knows Best" in the style of an old-fashioned Broadway musical number after directors Byron Howard and Nathan Greno specifically asked that they provide the film with one. Musically, "Mother Knows Best" directly contrasts with the more pop-oriented singer-songwriter style of Rapunzel's songs, which are performed by pop singer Mandy Moore. A Tony Award-winning Broadway performer, Murphy recorded "Mother Knows Best" by envisioning Gothel as a person who revels in the spotlight and enjoys being the center of attention.

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