Аннотация:Vlasova T. Petrov A.N. Long-term Arctic Sustainability Monitoring Sustainability achievement can not be a fixed goal in a rapidly changing Arctic. Challenges as well as their solutions are changing gradually over time as people’s values orientations also changes. That is why it is so important to monitor these long-term changes involving knowledge and assessments from different groups of arctic stakeholder (such as Indigenous peoples, scientists, educators, business, decision-makers, etc.) at diverse and cross-cutting territorial and administrative scales- from global, national to local Arctic community. Achieving sustainability means implementation of Sustainable development goals as well as building resilient Socio-Ecological systems in the Arctic. Sustainability is becoming a top priority for many Arctic institutions, programs and forums. Based on the deep content analysis of available information from Arctic institutions, programs and meetings as well as local media, first of all we identify priority themes concerning Arctic Sustainability. Within them we delineate main challenges, their best solutions and key variables to be monitored within the Sustainability monitoring network which construction is envisioned to be tightly connected with many Arctic Observing and Data Systems. Acknowledgements. The research was supported by State Assignment IGRAS (№ 0148-2019-0008) and within the framework of the Belmont Forum project “Arctic Sustainability: Synthesis of Knowledge” (NSF # 1532655).