Radio 1 or Radio One most commonly refers to:
- BBC Radio 1, a music radio station from the BBC
- CBC Radio One, a talk radio station operated by the Canadian Broadcasting Corporation
Radio 1 or Radio One may also refer to:
- NPO Radio 1, a talk radio station operated by the Nederlandse Publieke Omroep, The Netherlands
- Radio 1, the former name of Nasional FM, Malaysia
- Radio 1 (Belgium), a talk radio station operated by the Flemish public broadcaster
- Radio 1 (Czech Republic), a commercial music radio station in Prague
- Radio 1 FM (The Gambia), an independent station based in Serrekunda
- Radio 1 (Ghana), a station operated by the Ghana Broadcasting Corporation
- Radio One (India), a commercial radio station in several Indian cities
- Radio One (Lebanon), a defunct Lebanese radio station
- Radio One (Mauritius), a private commercial radio station in Mauritius
- Radio One (New Zealand), a student radio station in Dunedin
- Radio Uno (Chile), a Chilean station playing only national music
- Radyo 1 of the Turkish Radio and Television Corporation
- Rai Radio 1, a talk radio station operated by the Italian public broadcaster
- RTÉ Radio 1, a talk radio station operated by the Irish public broadcaster
- Radio 1 (Norway), a network of commercial radio stations in Oslo, Trondheim, Bergen and Stavanger
- Urban One, a U.S. network radio operator, formerly Radio One