Discovery Channel (formerly The Discovery Channel) is an American satellite and cable specialty channel (also delivered via IPTV, terrestrial television and internet television in other parts of the world), founded by John Hendricks and distributed by Discovery Communications. It is a publicly traded company run by CEO David Zaslav. It provides documentary television programming focused primarily on popular science, technology, and history. In the U.S., the programming for the main Discovery network is primarily focused on reality television themes, such as speculative investigation (with shows such as MythBusters, Unsolved History, and Best Evidence), automobiles, and occupations (Dirty Jobs and Deadliest Catch); it also features documentaries specifically aimed at families and younger audiences. A popular annual feature is Shark Week.

On June 17, 1985, Discovery Channel was launched with $5 million in start-up capital from the BBC, the American investment firm Allen & Company, Venture America and several other investors. In the beginning it was available to 156,000 households and would broadcast for 12 hours between 3 p.m. and 3 a.m. with about 75 percent of the content new to American viewers.John Hendricks is credited with founding of the channel and its parent company, then known as Cable Educational Network Inc, in 1982.