Worldwide, Antonio Segundo (Antonio Segundo 
) is quite a rare masculine forename. The forename Antonio Segundo is habitual in Chile, where it is quite a common masculine name, Peru, where it is a rare boy's name, and Spain, where it is a very rare boy's name. Much less frequently, Antonio Segundo is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Antonio Segundo | Argentina, Peru, Ecuador, Spain, Chile |