Mars Ill is an emcee/DJ hip-hop duo from Atlanta, Georgia. The duo consists of Gregory Owens (Manchild) and Nathan Corrona (DJ Dust). They are also part of the hip-hop collective Deepspace5.

Coming together in 1998, Mars Ill has released several albums and EPs through independent record labels and two albums on Gotee Records. Their success in the underground hip-hop movement in the early 2000s led to their performing at Scribble Jam in 2003 and 2004 and, ultimately, their signing to Gotee.