Aris Velouchiotis (Greek name: Άρης Βελουχιώτης - real name: Thanasis Klaras - Θανάσης Κλάρας, Lamia, 27 August 1905 – Mesounta Arta, 16 June 1945) was a Greek journalist, politician, KKE member and leader of ELAS, the largest resistance organization in Greece during the Occupation.