Born in 1960 in Montreal, Canada, Demetrios Papakostas began painting in 2001 and to a fulltime art practice in 2011. Prior to this, he worked as a graphic artist while pursuing part time studies at Concordia University’s evening arts programme. Further studies at Montreal’s Visual Arts Centre and the Saidye Bronfman Centre allowed him to work with such artists as Nicole Lebel, Heather Yamada and prominent Canadian Painter Harold Klunder.

 Focusing on the most basic visual elements of colour, line, and form, the artist’s work attempts to initiate conversations and experiences with himself and the viewer. While hard-edge abstraction generally defines his work, he considers his process one of discovery and spontaneity, allowing him to probe issues of human perception and our relationship to nature, place, and time. More recently Papakostas’ work attempts to move beyond the either/or polarity of geometric or expressive abstraction.

 In addition to his art practice, Papakostas is the founder and director of GalerieERGA, a gallery rental space where he also manages and curates exhibitions, including "Art Sur Papier", an annual art exhibition he founded in 2021 dedicated to works on paper. He also collaborates with other artists to curate group exhibitions such as “Degel”, "Articulations" and the exhibition, “Being Constructiv” in 2025.

 The artist has participated in exhibitions at Galerie McClure, Galerie Espace, Galerie E.K. Voland, Galerie Beaux Arts des Ameriques, Galerie Erga, Galerie de la Ville, McBride Contemporain, Montreal’s Archive Contemporain, Art Zone 42 Gallery in Athens, Greece, as well as at 1515 Lincoln Gallery, Oklahoma City, US.

 His work is in private and corporate collections in Canada and the US. Papakostas is represented by 1515 Lincoln Gallery in Oklahoma City, USA and Denison Gallery in Toronto, Canada.