"Can't B Good" is a song recorded by American singer Janet Jackson for her tenth studio album Discipline (2008). It was written and produced by D. DoRohn Gough and Ne-Yo. The song is a soulful, "jazzy" R&B track about Jackson's relationship with Jermaine Dupri. It was released as the fourth and final single from Discipline on March 18, 2008 by Island Records.