Louis Székely (; born September 12, 1967), known professionally as Louis C.K. (), is an American stand-up comedian, writer, actor, and filmmaker. C.K. won three Peabody Awards and has received six Primetime Emmy Awards, as well as numerous awards for The Chris Rock Show, Louie, and his stand-up specials Live at the Beacon Theater (2011) and Oh My God (2013). He has won the Grammy Award for Best Comedy Album twice. In 2015, Rolling Stone ranked C.K.'s stand-up special Shameless number three on their "Divine Comedy: 25 Best Stand-Up Specials and Movies of All Time" list and ranked him fourth on its 2017 list of the 50 best stand-up comics of all time.C.K. began his career in the 1990s writing for comedians including David Letterman, Conan O'Brien, Dana Carvey, Chris Rock, and Saturday Night Live. He was also directing surreal short films and directed two features—Tomorrow Night (1998) and Pootie Tang (2001). In 2001, C.K. released his debut comedy album, Live in Houston, directly through his website and became among the first performers to offer direct-to-fan sales of tickets to his stand-up shows and DRM-free video concert downloads via his website. He has released nine comedy albums, often directing and editing his specials as well.He had supporting acting roles in films such as David O. Russell's American Hustle, Woody Allen's Blue Jasmine (both 2013), and the Hollywood blacklist drama Trumbo (2015). C.K. created, directed and starred in Louie, an Emmy Award winning semi-autobiographical comedy-drama series aired from 2010 to 2015 on FX. In 2016, C.K. created and starred in his self-funded web series Horace and Pete. He also co-created the shows Baskets and Better Things for FX and voiced the protagonist Max in the animated film The Secret Life of Pets in the same year.
In 2017 he admitted to several incidents of sexual misconduct. This resulted in widespread criticism and caused his 2017 film I Love You, Daddy to be pulled from distribution prior to its release, a halt in his stand-up career, and many significant professional repercussions. In 2018 he returned to stand-up comedy and in 2019 announced an international tour. In 2020, C.K. released his comeback special, Sincerely Louis C.K., on his website.