Brie Larson was born Brianne Sidonie Desaulniers in Sacramento, California, to Heather (née Edwards) and Sylvain Desaulniers, homeopathic chiropractors who ran a practice together. She holds dual citizenship of Canada and the United States.

Larson expressed interest in becoming an actress and auditioned for a training program at the American Conservatory Theater in San Francisco, becoming its youngest student. She began her acting career with a comedy sketch on "The Tonight Show with Jay Leno" in 1998.

Larson appeared as a regular in the sitcom "Raising Dad", playing the daughter of the title character. This marked one of her early significant roles in television.

Larson released her album "Finally Out of P.E.", which she co-wrote with other songwriters. Although the album was not a commercial success, selling only 3,500 copies, it showcased her musical talents.

Larson played a sardonic teenager in the television series "United States of Tara", further establishing her acting credentials.

Larson's leading role in the independent drama "Short Term 12" marked a significant breakthrough in her career, showcasing her ability to handle complex and emotionally demanding roles.

Larson won the Academy Award for Best Actress for her portrayal of a kidnapping victim in the drama "Room", cementing her status as a leading actress in Hollywood.

Larson starred in the adventure film "Kong: Skull Island", her first big-budget release, and also made her feature film directorial debut with the independent comedy-drama "Unicorn Store".

Larson starred as Captain Marvel in the Marvel Cinematic Universe, beginning with "Captain Marvel" and continuing with "Avengers: Endgame". This role further solidified her status as a leading actress in blockbuster films.

Larson starred in the miniseries "Lessons in Chemistry", for which she was nominated for a Primetime Emmy Award for Outstanding Lead Actress, demonstrating her continued versatility and success in various formats.