Cognomen Francisco Casimiro (Francisco Casimiro 
) , in all the world, is an extremely rare surname. The last name Francisco Casimiro is habitual in Latin America and the Caribbean, particularly Chile, where it is a very rare surname. Much more frequently, Francisco Casimiro is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Francisco Casimiro | Spain, Chile, Ecuador, Argentina, Peru |