The sculptor Stelios Triantis was born in Trikastro, Preveza, in 1931 and passed away in 1999.
He was the husband of the archaeologist Aliki-Ismini Stypsianou.
He studied at the Athens School of Fine Arts under the sculptor and Academician Michalis Tombros. He continued his studies in Paris at the École Supérieure des Beaux-Arts on a scholarship from the Greek State Scholarship Foundation (IKY).
In 1961, he was appointed to the Archaeological Service as a museum artist-sculptor. In this capacity, he worked with numerous archaeologists in Greece and abroad, including projects at the Louvre Museum and the Capitoline Museums. He received a commendation from the Academy of Athens for his archaeological contribution.
Triantis has erected many marble and bronze statues in public spaces across Greece, such as the Monument to the Victims of the Distomo Massacre, the bronze equestrian statue of General Plastiras in Karditsa, the statues of Pyrrhus and Maximus the Greek in Arta, and the busts of Emmanouil Pappas at Pedion tou Areos, among others.
He held a solo exhibition at Gallery Mouffe in 1972. He also participated in group exhibitions in Greece (the Panhellenic Exhibition of 1973, Sculpture ’78 in Filothei, ADYTO Art Space in Chalandri, Antinor Gallery, and an exhibition by the Hellenic Parliament) and abroad (Salon d’Automne in 1965, 1967, and 1971; Société des Artistes Français in 1971; Société des Artistes Indépendants in 1971; Société Internationale des Beaux-Arts in 1972 and 1973; and a medal exhibition in Barcelona).
In 2004, a major retrospective of his work was held in Ioannina.