Radio 4 may refer to:
Radio stations
- BBC Radio 4, a British national public service radio station
- BBC Radio 4 Extra, BBC Radio 4's sister station
- NPO Radio 4, the former name of Dutch radio station NPO Klassiek
- Polskie Radio Program IV, a Polish national public service radio station
- Radio 4, the former name of Malaysian English-language radio station Traxx FM
- Radio 4, the former name of Singaporean Tamil-language radio station Oli 968
- Radio 4U, a former Ukrainian radio station
- 4BC, an Australian radio station in Queensland
Other uses
- Radio 4 (band), a New York dance-punk band