Boy (stylized BOY) is a Swiss/German pop duo founded in 2007 by singer Valeska Steiner (Swiss) and bassist Sonja Glass (German). The two met while at a pop-music course at the Hochschule für Musik und Theater Hamburg in 2005. The band initially played concerts exclusively, before being discovered and signed to Herbert Grönemeyer's label, Grönland Records, in 2011.

Their debut album, Mutual Friends (Gold-certified in Germany), was produced by Philipp Steinke and released in the autumn of 2011. The band sings entirely in English in a style reminiscent of that of Leslie Feist.