"Be Without You" is a song by American recording artist Mary J. Blige. It was written by Johnta Austin, Bryan Michael Cox, Jason Perry and Blige for her seventh studio album, The Breakthrough. Produced by Cox with Geffen producer Ron Fair, it was released as the album's first official single in late 2005. Ranking among the most played songs on US radio in the year 2006, the single was certified double platinum by the RIAA in 2007.