Around the globe, Polonio (Polonio 
, Polonius 
) is a rare boy's first name. The first name Polonio is habitual in Argentina, where it is a rare masculine name, the Dominican Republic, and Philippines. Measured by absolute frequency, it most frequently occurs in Philippines, Argentina, and Peru. More frequently, Polonio is the last name as well as the forename.
Polonio is also a name for the fictitious and mythical characters: Polonio (Polonius) , the operatic character in the opera Amleto by Franco Faccio; lord Chamberlain; Polonius , the character in Hamlet; Polonius , the operatic character in the opera Hamlet by Ambroise Thomas; court chancellor and Polonius , the operatic character in the opera Hamlet (Dean).