Sosie Ruth Bacon (born March 15, 1992) is an American actress. Her first role was playing 10-year-old Emily in the film Loverboy (2005), which was directed by her father, Kevin Bacon, and stars her mother, Kyra Sedgwick. Encouraged by producer James Duff, she appeared in The Closer (2009). Since then her credits include Wishin' and Hopin' (2014), Ana Maria in Novela Land (2015), Scream (TV series) (2016), Story of a Girl (2017), 13 Reasons Why (2017–2018), Charlie Says (2018), The Last Summer (2019), Wyrm (2019), Narcos: Mexico (2020), Mare of Easttown (2021), As We See It (2022) and Smile (2022).

Sosie Bacon was born in 1992 to actors Kevin Bacon and Kyra Sedgwick, who tried to provide her with as ordinary an upbringing as was possible in the circumstances and did not want to push her into acting.^[1][2] Bacon studied at Brown University^[3] and has studied at musical theatre company CAP21.

In 2005, she starred in Loverboy. While directing Loverboy, Kevin Bacon decided to cast Sosie in the film. Asked about the choice, he said that he made the decision as a director, not as a father, because he believed his daughter was perfect for the role, and "Sosie was cool. She kind of got it out of her system. She said 'Oh, that was fun—now I'm going back to school'." Sosie portrayed the main character Emily in a flashback, while the adult Emily was portrayed by Sosie's mother Kyra Sedgwick.^[4][5] As Emily, Sosie sang an a cappella version of the David Bowie song "Life on Mars?", that was described in a review from The New York Times as "grotesquely funny".^[6][7] Her brother, Travis Bacon, was cast in a smaller role in the film.^[8] Kevin praised Sosie's work on Loverboy, but said that he would not be encouraging her to pursue acting further.^[9]

In 2009, she starred in The Closer.^[1] She joined the cast of Fiction in Photographs in 2012, an off-Broadway musical by Dan Mills and Randy Redd.^[10][11]

On November 21, 2013, Bacon was crowned Miss Golden Globe 2014.^[12] Chosen each year by the Hollywood Foreign Press Association, Miss Golden Globe assists with the Globes ceremony and is typically the daughter of Hollywood celebrities.^[12]

Sosie was cast in the leading female role of the independent film Off Season (2014), opposite Chance Kelly.^[13] Following up her role in 13 Reasons Why, Bacon was cast in Here and Now, a 2018-debuting HBO family drama series from award-winning writer-producer Alan Ball, as Kristen, the youngest daughter of a couple played by Tim Robbins and Holly Hunter.^[14] In HBO’s 2021 limited series Mare of Easttown, she was cast as Carrie Layden. She starred in the 2022 horror film Smile as Dr. Rose Cotter, and received praise for her performance.^[15]