Vladimir Ryabinin (Russian: Влади́мир Эдуа́рдович Ряби́нин), born 23 May 1956 in the city of Korolev in the Moscow Oblast, Russia, is a Russian oceanographer, climatologist, and meteorologist. Since 1 March 2015 he has been the Executive Secretary of the Intergovernmental Oceanographic Commission (IOC) of UNESCO and Assistant Director General of UNESCO.