Theodoros Pantaleon was born on 7 March 1945 in Athens, Greece. He studied graphic arts at the Athens Technological Organization - ATO of Constantinos A. Doxiadis, Athens, and painting with Ilias Dekoulakos (1929-1998).
Theodoros Pantaleon has presented the following personal exhibitions: O Gallery, Athens (1976); Galerie De Greef, Brussels, Belgium (1978); Galerie Zygos, Athens (1978, 1981, 1983); Yakinthos Gallery, Athens (1982, 1991); K Gallery, London (1992); Titanium Art Gallery, Athens (1994); and Municipal Gallery, Syros Island (2000). He also took part in a multitude of group exhibitions including the 7th International Art Exhibition, Basel, Switzerland (1976); Image - Abstraction - Object, National Gallery - Alexandros Soutzos Museum, Athens (1984); Form and Fantasy in the World of Color, Istituto Italiano di Cultura, Thessaloniki (1985); Figures and Portraits, Yakinthos Gallery, Athens (1986); Painting for a Table, Municipal Cultural Center, Athens (1988); and many others.
Theodoros Pantaleon continues to live and work in Athens.