The Karen Demirchyan Yerevan Subway, colloquially known as the Yerevan Metro, is a rapid transit system that serves the capital of Armenia, Yerevan. Opened on 7 March 1981, it was the eighth metro system in the former Soviet Union. Owned by the government, it is operated by the Karen Demirchyan Yerevan Subway CJSC of the Ministry of Transport and Communication.

Karen Serobi Demirchyan was a Soviet and Armenian politician who served as President of the National Assembly in 1999 until his assassination. He had been also the First Secretary of the Communist Party of Armenia from 1974 to 1988. He was killed with other politicians in the Armenian parliament shooting.