Moon So-ri (Korean: 문소리) is a South Korean actress and filmmaker. She began her career on stage as part of the theater company Hangang. She made her feature film debut in Lee Chang-dong's Peppermint Candy (1999). She gained international prominence in 2002 by starring in Lee Chang-dong's Oasis, for which she won the Marcello Mastroianni Award for Emerging Actors at the 59th Venice International Film Festival—making her the second Korean recipient—and Best Actress at the Seattle International Film Festival. Moon earned further acclaim in Im Sang-soo's A Good Lawyer's Wife (2003). This film was also invited to the 60th Venice International Film Festival, and she subsequently won the Best Actress award from the Stockholm International Film Festival, followed by Best Actress honors at numerous domestic awards ceremonies. Moon worked in three films of director Hong Sang-soo: Like You Know It All (2009), Ha Ha Ha (2010), which won the top prize in the Un Certain Regard section at the 2010 Cannes Film Festival; and In Another Country (2012), which competed for the Palme d'Or at the 2012 Cannes Film Festival. She also collaborated with acclaimed director Park Chan-wook in The Handmaiden (2016), which competed for the Palme d'Or at the 2016 Cannes Film Festival. For her role, Moon won Best Supporting Actress at the 11th Asian Film Awards. Moon has also performed voice-over work in both animated and documentary films. Moon made her directorial debut with the short film The Actress, which premiered at the 19th Busan International Film Festival. Along with two other short films The Running Actress and The Best Director, the feature-length film The Running Actress premiered in 2017. She continues to be active on stage, notably with the theater company Chaimu, which was led by Yi Sang-woo and later Min Bok-gi, participating in productions such as Sad Play (2006), There (2006) and The Pitmen Painters (2010 and 2022). She also contributed her acting talent to Yi Sang-woo's debut film, A Little Pond (2010). Her stage credits also include productions like The Empire of Light and play Love's End, directed by French director Arthur Nauzyciel. In the 2020s, Moon has expanded her presence across streaming platforms, appearing in Netflix projects such as the film Seoul Vibe (2022) and series like The School Nurse Files (2020), Queenmaker (2023), season 2 of Hellbound (2024), and When Life Gives You Tangerines (2025).