Cinemax (alternatively shortened to Max) is an American pay television, cable, and satellite television network owned by the Home Box Office, Inc. subsidiary of Warner Bros. Discovery. Developed as a companion "maxi-pay" service complementing the offerings shown on parent network Home Box Office (HBO) and initially focusing on recent and classic films upon its launch on August 1, 1980, programming featured on Cinemax currently consists primarily of recent and older theatrically released motion pictures, and original action series, as well as documentaries and special behind-the-scenes featurettes.
Cinemax—which, in conjunction with HBO, was among the first two American pay television services to offer complementary multiplexed channels in August 1991—operates eight 24-hour, linear multiplex channels; a traditional subscription video-on-demand platform (Cinemax On Demand); and formerly a TV Everywhere streaming platform for Cinemax's linear television subscribers (Cinemax Go). On digital platforms, the Cinemax linear channels were not accessible on Cinemax Go in its final years, but were available to subscribers of over-the-top multichannel video programming distributors, and as live streams included in a la carte subscription channels sold through Apple TV Channels, Amazon Video Channels and Roku, which primarily feature VOD library content. (The live feeds on the OTT subscription channels consist of the primary channel's East and West Coast feeds and, for Amazon Video customers, the East Coast feeds of its seven multiplex channels.)
Cinemax's operations are based alongside HBO inside Warner Bros. Discovery's secondary corporate headquarters at 30 Hudson Yards in Manhattan's West Side district.
In an effort to capitalize on the swift national growth that Home Box Office (HBO) had experienced since it began transmitting via satellite in September 1975, Home Box Office, Inc.—then owned by the Time-Life Broadcasting unit of Time Inc.