ABC World News Tonight is the flagship daily evening television news program of ABC News, the news division of the American Broadcasting Company (ABC) television network in the United States. It is currently the most watched network newscast in the United States, with an average of 2 million more than its nearest rival, NBC Nightly News. Since 2014, the program's weekday broadcasts have been anchored by David Muir. As of February 6–7, 2021, Whit Johnson and Linsey Davis anchor the Saturday and Sunday editions of the newscast respectively.

News broadcasting is the medium of broadcasting various news events and other information via television, radio, or the internet in the field of broadcast journalism. The content is usually either produced locally in a radio studio or television studio newsroom, or by a broadcast network. A news broadcast may include material such as sports coverage, weather forecasts, traffic reports, political commentary, expert opinions, editorial content, and other material that the broadcaster feels is relevant to their audience. An individual news program is typically reported in a series of individual stories that are presented by one or more anchors. A frequent inclusion is live or recorded interviews by field reporters.