Andreas initially studied painting with V. Vlachopoulos (1982-1984). He received his BA from the Athens School of Fine Arts (1984-1990), studying with professor P. Tetsis. During his studies, Kontellis was awarded scholarships from the State Scholarships Foundation. In 1993, he was awarded a three-year scholarship (from the S.S.F.) to develop a painting project in Greece focusing on expressionistic depictions of the human form under the supervision of P. Tetsis. In 2000, on a scholarship from Athens Academy, he received Master of Arts in Fine Art at London’s Middlesex University with professors John Thompson and Jim Mooney.