She grew up with the support and encouragement of her parents and older brother James and with this was inspired to reach her limits in acting and dance alike. Sarah began performing at a young age. She spent most of her childhood training at The National Ballet School of Canada. In addition, Gadon studied Psychology at the University of Toronto and took Cinema Studies at Innis College.
Sarah made her TV debut at the age of 11 with a guest appearance on the TV series Nikita. Guest appearances on Canadian-filmed television shows such as Twice in a Lifetime, Life with Derek, Are You Afraid of the Dark? and Doc followed, all by the time she was 18 years old. She also appeared in the Disney Channel TV movie Cadet Kelly with Hilary Duff and the ABC Family channel TV movie Mom’s on Strike opposite Spencer Breslin and Faith Ford. She continued to be a steady TV presence with recurring roles in The Border, Being Erica, Happy Town and Murdoch Mysteries before finding herself co-starring with Keira Knightly and Viggo Mortensen in David Cronenberg’s A Dangerous Method, for which she was named one of TIFF’s rising stars. She also plays Lucie in The Moth Diaries and Robert Pattinson’s wife in Cronenberg’s Cosmopolis. One of Gadon’s upcoming projects is Antiviral, the debut film for director Brandon Cronenberg, who is the son of David Cronenberg. She participated in the CBC “Canada Reads” competition in March 2014. Her latest movies are The Amazing Spider-Man 2 and Belle.
The actress dances in spare time. She was on the honor role at her arts academy. She also won the 2014 Canadian Screen Awards: Performance by an Actress in a Supporting Role.