Hélène Loiselle was a Canadian actress living and working in Quebec. She was born in Montreal and studied acting with Charlotte Boisjoli, François Rozet, Jean Valcourt and Lucie de Vienne during the 1940s.

Loiselle joined the theatre troupe Compagnons de Saint-Laurent and performed works by Jean Giraudoux, Racine, Edmond Rostand and Shakespeare. She spent two years in the early 1950s in Paris developing her technique. On her return, she performed in plays that included Chekhov's Three Sisters and Uncle Vanya, Antigone and Victor ou les Enfants au pouvoir.