Marie-Sophie Nélisse (born March 27, 2000) is a Canadian actress. She is known for her Genie Award–winning performance in Monsieur Lazhar, as Liesel Meminger in the film adaptation of the best-selling novel The Book Thief, written by Markus Zusak, and as Caroline in The Kid Detective. She also stars as young Shauna in Showtime's series Yellowjackets.

Early life
Marie-Sophie Nélisse was born in Windsor, Ontario, on March 27, 2000. She is of French descent. Her mother, Pauline Belhumeur, left her job as a schoolteacher in 2013 to act as a talent manager for both Sophie and her younger sister Isabelle, who is also an actress. Nélisse is fluent in both French and English. The family moved to Montreal when she was four.