The Upright Citizens Brigade Theatre (shorter UCB Theatre) is an American improvisational theatre and training center, founded by the Upright Citizens Brigade troupe members, including Matt Besser, Amy Poehler, Ian Roberts and Matt Walsh. It has locations in the New York City neighborhoods of Hell's Kitchen and the East Village as well as the Los Angeles neighborhoods of Hollywood and Sunset Boulevard. UCB was located in Chelsea West 26th St location from April 2003 until November 2017. After which the theatre moved to Hell's Kitchen, 555 West 42nd St in December 2017. The second theatre located in the East Village opened in 2011 and the Los Angeles expansion started in 2014.