Once Upon a Studio is a 2023 American live-action/animated fantasy comedy crossover short film written and directed by Dan Abraham and Trent Correy, produced by Walt Disney Animation Studios and released by Walt Disney Pictures. In the film, Disney characters come to life from pictures hanging in the studio building following the end of a usual work day. Inspired by the studio's centennial on October 16, 2023, the short film was described as a "love letter" to Walt Disney Animation Studios by Correy and Abraham. The short's art style combines computer graphics, traditional animation and live-action. The film is dedicated to Burny Mattinson, who died eight months before its release. Once Upon a Studio premiered at the Annecy International Animation Film Festival on June 11, 2023, and had its first public showing on ABC on October 15, 2023, as part of The Wonderful World of Disney: Disney's 100th Anniversary Celebration. The short film premiered on Disney+ and Hulu on October 16, 2023, and the exact same date on Disney Channel, as part of Once Upon A Monday Movie Marathon, FX, FXM and Freeform. It will be screening in theaters with Wish on November 22, 2023.