Cognomen ラジオ (Radio 
, Raggio 
, ラジオ 
) , throughout the world, is quite a common family name. The last name ラジオ is characteristic of Jordan, where it is quite a rare surname, Uruguay, and Argentina. Measured by absolute frequency, it is the most numerous in Argentina, Italy, and the United States. Also, ラジオ is the forename as well as the last name.