Siye Abraha Hagos (Tigrinya: ስዬ አብርሃ ሓጐስ, siyә abräha; born 12 June 1955) is an Ethiopian politician who served as Ethiopian Minister of Defense from 1991 to 1995. He was a top official of Tigray People's Liberation Front (TPLF) and Ethiopian People's Revolutionary Democratic Front executive committees until 2002. Since 2013, he has been working as Security Sector Reform Advisor for United Nations Development Programme in Liberia.