Consists of the leaders of the six core ARCTOS institutions and the ARCTOS Leader Group. In addition,  the leader of the department of Arctic and Marine Biology (AMB) at UiT (Elina Halttunen) has an observer status in the Board.
The Board is responsible for approval of budgets and financial reports, and strategy and action plans, integration with member institutions plans and priorities, acceptance of new member institutions. The ARCTOS Board meets 1-2 times a year.

InstitutionRepresentativeDeputy representative
UiT The Arctic University of NorwayDag Rune OlsenJørgen Berge
UNIS The University Centre in SvalbardJøran Moen
Institute for Marine ResearchNils Gunnar KvamstøMaria Fossheim
Akvaplan-nivaMerete KristiansenAnita Evenset
Nord UniversityHanne Solheim HansenKetil Eiane
Norwegian Polar InstituteOle Arve MisundNalân Koç