This comment argues for the recognition of ecocide as an international crime, focusing on its contemporary legal relevance and the growing momentum for its codification. Originally coined in 1970 to describe wartime environmental destruction, the term ecocide was framed in parallel to genocide and grounded in the post–World War II development of international criminal law. Although initial legal efforts to formalize ecocide, including proposed conventions and debates during the drafting of the Rome Statute, failed to secure sufficient political support, these early shortcomings have been re-energized by rising environmental consciousness and sustained legal advocacy, particularly by the Stop Ecocide Foundation. Recent developments, including the 2021 legal definition proposed by the Independent Expert Panel and the 2024 amendment proposal to the Rome Statute advanced by Pacific Island nations, reflect a renewed and increasingly actionable international consensus. By examining the conceptual genealogy of ecocide and its doctrinal links to international humanitarian and criminal law, this comment contends that recognizing ecocide as a core international crime is not only a normative necessity but also a legally coherent and pragmatic step. It directly responds to the scale and urgency of present environmental crises and addresses a longstanding gap in the enforcement architecture of international criminal law.