Ballmastrz: 9009 (ボールマスターズ: 9009) is an adult animated sitcom created by animator and voice actor Christy Karacas. It premiered on April 9, 2018, on Cartoon Network's nighttime programming block Adult Swim and was produced by Titmouse, Inc. and Williams Street. The series stars actress Natasha Lyonne as the voice of Gaz Digzy, an athletic superstar in a dystopian future where humanity is satiated by a violent sport simply known as "The Game". The series is characterized by anime-style iconography, dark humor, and shock value.

In July 2019, the show was renewed for a second season, which premiered on February 24, 2020. A special titled Ballmastrz: Rubicon aired on February 20, 2023. The special picks up where the last episode leaves off, it was produced by PFFR, and animated by Studio 4°C. The special has a more traditional anime style than the series, and is meant to serve as a fork possibly leading to future seasons. As of October 2023, no new episodes are in development at Adult Swim, though plans may change in the future.