Rakeem Calief Myer, (born 1978) better known by his stage name Roc Marciano, is an American rapper, songwriter and producer from Hempstead, Long Island, New York. He is currently signed to Decon Records.

Originally a member of Busta Rhymes' crew, Flipmode Squad becoming the sixth member after the departure of Lord Have Mercy, (aside from other flipmode acts Serious and Show Money) Roc Marciano left in 2001 to form the U.N., a hardcore underground hip hop group consisting of three other MCs (Dino Brave, Laku & Mic Raw) with whom he released an album on Carson Daly’s 456 Entertainment in 2004. Notably, Roc Marciano appeared in the 2005 Wu-Tang Clan compilation album, Wu-Tang Meets the Indie Culture, and in Pete Rock’s 2008 album, NY’s Finest, drawing acclaim for such performances. Since 2008, Roc Marciano has been working on his solo career, and to widespread internet acclaim, released his entirely self-produced debut album, Marcberg in 2010.