Family name Gerrardo (Gerrardo 
) , in all the world, is a rare last name. The cognomen Gerrardo is habitual in Italy, where it is a very rare surname, Indonesia, and Colombia. In absolute terms, it most frequently occurs in Indonesia, Mexico, and Italy. Likewise, Gerrardo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gerrardo | Philippines, Italy, Mexico, United States, Indonesia |