Oganessian was granted Armenian citizenship in July 2018 by Premier Nikol Pashinyan. Oganessian is a member of the Board of Trustees of the Foundation for Armenian Science and Technology (FAST). He is also the chairman of the international scientific board of the Alikhanian National Science Laboratory (Yerevan Physics Institute). In 2017 HayPost issued a postage stamp dedicated to Oganessian. In 2022 the Central Bank of Armenia issued a silver commemorative coin dedicated to Oganessian and the element oganesson (Og). In April 2022 he was named honorary professor of Yerevan State University.