Coast to Coast AM is an American late-night radio talk show renowned for exploring paranormal phenomena, conspiracy theories, and alternative topics. Founded in 1988 by Art Bell, who hosted the program until 2003, it originated as a platform for discussing UFOs, ghosts, alternative medicine, and fringe science, often featuring guest experts and callers. Bell's charismatic style and the show's overnight timing helped it build a dedicated audience seeking unconventional perspectives on current events and mysteries. Initially broadcast from Bell's studio in Pahrump, Nevada, the program quickly gained popularity through syndication, establishing itself as a cultural phenomenon in alternative media.

Since 2003, the show has been hosted by George Noory, who has expanded its reach while maintaining its core focus on the unexplained. Distributed by Premiere Networks, a subsidiary of iHeartMedia, Coast to Coast AM airs seven nights a week from 1:00 a.m. to 5:00 a.m. ET on over 600 affiliate stations across the United States, consistently ranking as the most listened-to overnight radio program. The format includes live call-ins, interviews with authors, scientists, and whistleblowers, and occasional special broadcasts on topics like government cover-ups or supernatural encounters, fostering a community of listeners interested in challenging mainstream narratives.

The program's influence extends beyond radio, with podcasts, books, and merchandise contributing to its brand. It has faced criticism for promoting unverified claims and pseudoscience, yet remains a key outlet for alternative viewpoints, occasionally intersecting with political discourse on issues like surveillance or health conspiracies.