This article is about astronomical stellar radio sources. For stars of radio, see Radio celebrity. For the English new wave musical group, see Radio Stars. For the South Korean film, see Radio Star (film). For the South Korean TV series, see Radio Star (TV series).
Stellar radio sources, radio source stars or radio stars are stellar objects that produce copious emissions of various radio frequencies, whether constant or pulsed. Radio emissions from stars can be produced in many varied ways.