Family name Roserio (Roserio 
) , in the world, is a very rare surname. The cognomen Roserio is habitual in Philippines, where it is a very rare surname, Venezuela, where it is an extremely rare surname, and Canada. Measured by absolute frequency, it is the most numerous in Philippines, India, and the United States. More frequently, Roserio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Roserio | Philippines, India, Brazil, Italy, United States |