The following is a list of events affecting radio broadcasting in 2021. Events listed include radio program debuts, finales, cancellations, and station launches, closures and format changes, as well as information about controversies.
For topics pertaining to radio in the United Kingdom, see 2021 in British radio.
Overview of the events of 2021 in radio
|1||The annual Vienna New Year’s Concert is broadcast throughout Europe. Because of the COVID-19 pandemic there is no live audience, but the concert is able to go ahead because the orchestra’s members have been COVID tested on a daily basis.|||
|4||On the occasion of its 75th anniversary, Queen Elizabeth II of the United Kingdom sends her best wishes to BBC Radio 4‘s magazine programme Woman’s Hour. She praises the programme for having “played a significant part in the evolving role of women”.|||
|11||US broadcasting company Cumulus Media issues a directive to its News/Talk outlets that orders local and syndicated hosts avoid discussing anything to do with allegations of voter fraud on pain of dismissal. The move comes days after the events of the storming of the United States Capitol on January 6, seen to have been spurred on by Conservative talkers Mark Levin and Dan Bongino, both vocal proponents of debunked election fraud theories. Ben Shapiro, though not employed by the company, is also listed in the memo. A host from Cumulus’ KMJFresno, Ray Appleton, is suspended.|||
|12||WMGGEgypt Lake, Florida, turns off its analog operations and flips exclusively to digital, becoming the second AM radio station in the United States, following WWFD; unlike WWFD, WMGG has filed with the FCC to operate permanently as an all-digital station, the first station to request a permanent license. The station will maintain an analog FM translator.|||
|15||Proprietor Armando Calderón Lara surrenders the license for XHACM-FM, a station operating from Cárdenas, Tabasco, Mexico. The station closed down on January 31.|||
|CKEC-FM in New Glasgow switches to an adult contemporary format branded as 94.1 The Breeze.|
|18||The Q network launches in the Maritime region of Canada as Stingray Radio rebrands four of its rock stations to the “Q” branding. CJMO-FM in Moncton drops its longtime C103 branding and switches to that branding and CKEZ-FM in New Glasgow drops its Zed branding and joins the Q network. In addition, the syndicated morning show BJ & The Q Morning Crew expanded into New Glasgow.|
|25||US broadcasting company Alpha Media files for Chapter 11 bankruptcy protection and plans to start a reorganization with its creditors and lenders.|||
|The “Jack” branding makes its way to Medicine Hat, Alberta as CJCY-FM switches to that branding.|