In Myanmar, the authorities have committed genocide against the Rohingyas in the Rakhine state. Atrocities have caused more than a million Rohingyas to flee Myanmar to Bangladesh. The majority of Rohingyas have settled in refugee shelters in Ukhiya, Bangladesh. Based on the literature, as well as in-depth interviews with 40 residents in the host community of Ukhiya, fieldwork, and a review of reports published by the United Nations, this chapter explores the devastating effects of refugee settlements on the environment of Ukhiya. The effects of the genocide against the Rohingyas, their displacement across the national border between Myanmar and Bangladesh, and their settlement in Ukhiya have contributed to ecocide in the host community there by devastating its land, water, wildlife, and agriculture. Emergency mitigation measures must be taken to slow the process of environmental degradation in Ukhiya. The Myanmar government must be legally bound to ensure that the genocide against the Rohingyas and their settlement in Ukhiya, which have caused the loss of ecosystems there, ends with the peaceful repatriation of Rohingya refugees to Myanmar.