The Green Baby (緑色の赤ちゃん Midori-iro no Aka-chan) is a tertiary antagonist and key character featured in the sixth part of JoJo's Bizarre Adventure, Stone Ocean, specifically the "AWAKEN" story arc.

The Green Baby is a creature born from a combination of DIO's Bone and the souls of criminals within the prison. The baby's birth is part of the plan created by DIO and put into action by his ally, Enrico Pucci. The baby is a Stand user, automatically protected by Green, Green Grass of Home.