Caitríona Mary Balfe (/kəˈtriːnə ˈbælf/; born 4 October 1979) is an Irish actress, producer, and former fashion model. She is best known for her starring role as Claire Fraser in the Starz historical drama series Outlander, for which she received a British Academy Scotland Award, an Irish Film and Television Award, two People's Choice Awards, and three Saturn Awards. She also earned nominations for two Critics' Choice Television Awards and four Golden Globe Awards for Best Actress in a Television Series – Drama.

At age eighteen, while studying Drama at the Dublin Institute of Technology, Balfe was offered work as a fashion model in Paris. She was featured both in advertising campaigns and on runways for such brands as Chanel, Dolce & Gabbana, Roberto Cavalli, Alexander McQueen, Balenciaga, Givenchy, Marc Jacobs, Bottega Veneta, Oscar de la Renta and many others over ten years before refocusing on acting. She had leading roles in the web series The Beauty Inside (2012) and H+: The Digital Series (2012–2013), and appeared in the films Super 8 (2011), Now You See Me (2013), Escape Plan (2013), Money Monster (2016), Ford v Ferrari (2019), and Belfast (2021).