Frontline is an investigative documentary program distributed by the Public Broadcasting Service (PBS) in the United States. Episodes are produced at WGBH in Boston, Massachusetts. The series has covered a variety of domestic and international issues, including terrorism, elections, environmental disasters, and other sociopolitical issues. Since its debut in 1983, Frontline has aired in the U.S. for 39 seasons, and has won critical acclaim and awards in broadcast journalism. In 2024, Frontline won its first Oscar at the 96th Academy Awards for Best Documentary Feature, "20 Days in Mariupol," made by a team of AP Ukrainian journalists. Frontline has produced over 750 documentaries from both in-house and independent filmmakers, 200 of which are available online.

The Public Broadcasting Service (PBS) is an American public broadcaster and non-commercial, free-to-air television network based in Crystal City, Arlington, Virginia. PBS is a publicly funded nonprofit organization and the most prominent provider of educational programs to public television stations in the United States, distributing shows such as Frontline, Nova, PBS NewsHour, Masterpiece, Sesame Street, and This Old House.