Simon Oraon Minj, popularly known as the Waterman of Jharkhand in the media and Simon Baba among his villagers, is an Indian environmentalist and social worker, who is known to have worked to combat drought in the state of Jharkhand. His efforts have been reported behind the construction of five irrigation reservoirs as well as an environmental project which included mass tree plantation and digging of wells and ponds in the Bero Block near Ranchi, covering 51 villages. The Government of India awarded him the fourth highest civilian honour of the Padma Shri, in 2016, for his contributions to society.