"She Knows" is a hip hop song performed by American recording artist Ne-Yo, taken from his sixth studio album, Non-Fiction (2015). It features a guest verse by rapper Juicy J. The song was released on September 16, 2014 by Compound Entertainment and Motown Records, and serves as the lead single from the album following the release of an R&B-tinged first single, "Money Can't Buy". The song was produced by Dr. Luke and Cirkut, with vocal production by Jesse "Corparal" Wilson.

Jordan Michael Houston III, known professionally as Juicy J, is an American rapper, songwriter, and record producer. Originally from Memphis, Tennessee, he is a founding member of the Southern hip hop group Three 6 Mafia, established in 1991. He released ten studio albums with the group, which began as an underground act until attaining mainstream recognition and signing with Loud Records, an imprint of Columbia Records in 2000. The group's 2005 single, "Stay Fly" reached their furthest commercial success and peaked at number 13 on the Billboard Hot 100. That same year, they recorded the song "It's Hard out Here for a Pimp" for the film Hustle & Flow, which won an Academy Award for Best Original Song.