Hélène Guisan-Démétriadès (Démétriadès, born 16 November 1916) is a Swiss Vaud writer, poet and teacher.
Guisan-Démétriadès was born in Istanbul, Ottoman Empire on 16 November 1916. She came to Switzerland at the age of six. After studying literature and years of teaching Ancient Greek, she married the Vaud councilor .
She translated Greek tragedies into French and wrote many articles of spiritual reflection. She is also the author of La Tierce présence a work which was awarded the Prix Ève Delacroix of the Académie française in 1995.
As of November 2019, Guisan lives in Lausanne.[1]