Oleksandr Valeriiovych Lytvynenko (Ukrainian: Олександр Валерійович Литвиненко; born 27 April 1972) is the current Secretary of the National Security and Defense Council of Ukraine, member of the Headquarters of the Supreme Commander-in-Chief.
From April 4, 2014, to August 13, 2019 — Deputy Secretary of the National Security Council.
From August 13, 2019, to July 23, 2021 — director of the National Institute for Strategic Studies.
From July 23, 2021, he was appointed the head of the Foreign Intelligence Service.
From July 27, 2021, a member of the National Security and Defense Council of Ukraine.