Vasilios Kotronias (Greek: Βασίλειος Κοτρωνιάς; first name sometimes spelled Vassilios; born 25 August 1964) is a Greek chess player and writer. He is a ten-time Greek champion (1986, 1987, 1988, 1990, 1991, 1992, 1994, 2006, 2010, 2014). Kotronias was awarded the titles of International Master in 1986 and Grandmaster in 1990 by FIDE. Between 1998 and 2004, he represented Cyprus, but has since switched federations to become a Greek national player once again.