Internet radio (Web radio) is the continuous transmission of audio (audio, streaming audio) via the Internet on your computer or mobile phone. This technique of transmitting audio files using data transmission is similar to terrestrial radio but its main advantage is that it can be heard anywhere on earth.

A number of Web services and free software allow users to create their own Internet radio or television station, with global reach and at very low cost. Internet radio stations are similar to regular ones, allowing an individual or organization to broadcast live music over the internet. Online radio stations can be a simulcast of a regular radio station, an amateur broadcasting their own station, or commercial online stations with producers, live programming and commercials.