Paramount+ (formerly known as CBS All Access in the United States and 10 All Access in Australia) is an American subscription video on-demand over-the-top streaming service owned by Paramount Global. The service's content is drawn primarily from the libraries of CBS Media Ventures, CBS Studios, Paramount Media Networks (formerly Viacom Media Networks and ViacomCBS Domestic Media Networks), and Paramount Pictures, while also including original series and films, live streaming sports coverage, and in the United States, live streaming of local CBS broadcast stations.

The service was launched in the United States in 2014, as CBS All Access, initially focusing on the live streaming of CBS programming from its local affiliates, as well as on-demand access to CBS programs and library content. The service began to expand into original programming in 2016, beginning with spin-offs of CBS programs such as Big Brother, The Good Fight, and the new Star Trek television series Star Trek: Discovery. Content from Comedy Central, MTV, Nickelodeon, and other Viacom brands was subsequently included, and in 2021, the service was rebranded as Paramount+, taking its name from the Paramount Pictures film studio and becoming a companion to other Paramount brands, mainly CBS, Nickelodeon, and Paramount Pictures. It expanded into Australia, Latin America, and Europe.