The actualisation of the problems of causing damage to the environment necessitates the determination of the grounds for international criminal liability for this act in the context of various international crimes, including genocide. The purpose of this study was to highlight the damage to the environment as a sign of the crime of genocide. The study was based on general scientific theoretical methods of scientific cognition, namely systemic, functional, and dogmatic methods, as well as methods of analysis, synthesis, and generalisation. Based on the consideration of the acts covered by the concept of genocide, the study found that damage to the environment in this context can be regarded as intentional creation of such conditions of existence for a national, ethnic, racial, or religious group which, by their qualitative characteristics, are aimed at the complete or partial physical destruction of this group, and the signs of such conditions are considered in the practice of the International Criminal Court, the International Tribunal for the Former Yugoslavia, and the International Criminal Tribunal for Rwanda. The study examined the tendency to perceive environmental damage as a sign of genocide in the context of genocide of indigenous peoples, and on this basis formulated the conclusion that it is not impossible to assess environmental damage as genocide outside the context of indigenous peoples’ living conditions, since the Statute of the International Criminal Court and the Convention on the Prevention and Punishment of the Crime of Genocide define the characteristics of a social group that may be a victim differently – national, ethnic, racial, or religious groups. The study found that damage to the environment may simultaneously constitute a sign of both ecocide and genocide if the ecocide is aimed at the destruction of a national, ethnic, racial, or religious group. The study identified the signs under which damage to the environment can be qualified as a crime of genocide: 1) deliberate creation of such living conditions for a national, ethnic, racial, or religious group aimed at its physical elimination as a social group; 2) such conditions are created in the context of deliberate physical destruction of a social group (contextual element); 3) genocidal intent, i.e., intent to destroy in whole or in part a social group defined in Article 2 of the Convention on the Prevention and Punishment of the Crime of Genocide. The practical significance of this study lies in the possibility of using its findings in the context of international justice, provided that the relevant acts are qualified as genocide, one of the ways of committing which is to cause damage to the environment