Surname Demecio Antonio (Demecio Antonio 
) , all over the world, is an extremely rare last name. The last name Demecio Antonio is habitual in Latin America and the Caribbean, particularly Chile, where it is a very rare surname. More prevalently, Demecio Antonio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Demecio Antonio | Chile, Ecuador, Costa Rica |