"Don't Think They Know" is a song by American R&B recording artist Chris Brown. It was released on June 17, 2013, as the second official single from his sixth studio album X. The song, produced by Moe Faisal and Mel & Mus, features a guest appearance from deceased American singer Aaliyah. The song contains an interpolation from the Tim & Bob produced single "They Don't Know" byJon B. The song has since peaked at number 81 on the US Billboard Hot 100.