Brenna Flaherty was born in Boston, Massachusetts and trained at Boston Ballet School in Massachusetts. She joined The National Ballet of Canada as a RBC Apprentice in 2016 and became a member of the Corps de Ballet in 2018.

Brenna’s repertoire includes Swan Lake, The Sleeping Beauty, Romeo and Juliet, Giselle, The Nutcracker, Alice’s Adventures in Wonderland, Anna Karenina, The Merry Widow, Chaconne, The Dream, Etudes, Paquita, Angels' Atlas, Paz de la Jolla and Orpheus Alive.