Originally, Tom & Jerry was a property of Metro-Goldwyn-Mayer (MGM).
Turner Broadcasting System (TBS) acquired the MGM legacy properties, including Tom & Jerry, in 1996.
In 1996, Time Warner bought Turner, which meant Warner Bros. became the new home of Tom & Jerry.
Warner Bros. Discovery is the current owner of the Tom & Jerry franchise, which includes the cartoons, characters, and related intellectual property.