A public file (or public inspection file) is a collection of documents required by a broadcasting authority to be maintained by all broadcast stations under its jurisdiction.

Such a file is required by the Federal Communications Commission (FCC) in the United States, and by the Canadian Radio-television and Telecommunications Commission (CRTC). The public inspection file must be maintained at the station's main studio and it must be accessible to anyone during business hours. Stations are required to provide copies at the requester's expense, or if the facility is outside of the community of license, provide copies via mail at their own expense. As of November 2007, the FCC required public inspection files must also be maintained on the station's website, and are optionally distributed to public libraries in the station's broadcast area for the sake of convenience. In these cases, public correspondence from viewers and political reports are usually left out due to cost concerns or misuse of the information provided. The FCC itself began to maintain a site in 2014 where a station can upload their public file components, allowing the public full access to the materials contained within without the restrictions of business hours or a studio visit. The latter move to website access allowed stations to easily close their studios to public access during the COVID-19 pandemic to prevent possible cross-contamination to station employees unknowingly from the public.

All or part of the file may be maintained in digital format as long as it is accessible at the time of inspection.