Globally, Амадио (Amadio 
, Амадио 
) is quite a rare masculine first name. The first name Амадио is habitual in Italy, where it is quite a rare male name, Philippines, where it is a rare masculine name, and Portugal. Measured by absolute frequency, the name is most common in Italy, Philippines, and Brazil. More frequently, Амадио is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Amadio | Italy, Philippines, United States, Argentina, Brazil |
| Амадио | Russia |
Amadej, Amadeo, Amadeu, Amadeus, Amadeusz, Amadyo, Amedea, Amedee, Amedeo, Amédée, Teofil, Teofilo, Teofilus, Teófilo, Theofiel, Theofilos, Theophil, Theophile, Theophilus, Théophile, Θεόφιλος, Амадео, Амадеу, Амадеус, Амеде, Амедео, Теофил, Теофило, Теофилос, Теофилус, Теофіл, Теофілус, Теофіль, Феофил, אמדאוס, אמדה, and アナスタシア