"Mr. Sandman" (or "Mister Sandman") is a popular song written by Pat Ballard and published in 1954. It was first recorded in May of that year by Vaughn Monroe & His Orchestra and later that year by the Chordettes and the Four Aces. The song's lyrics convey a request to "Mr. Sandman" to "bring me a dream" – the traditional association of the folkloric figure (but in this context the meaning of dream is more akin to 'dreamboat'). The pronoun used to refer to the desired dream is often changed depending on the sex of the singer or group performing the song, as the original sheet music publication, which includes male and female versions of the lyrics, intended.

Emmylou Harris' recording of the song was a hit in multiple countries in 1981. Other versions of the song have been produced by Chet Atkins (1954) and Bert Kaempfert (1968).