Cognomen Icilia (Icilia 
) , all over the world, is a very rare family name. The cognomen Icilia is habitual in Latin America and the Caribbean, particularly Honduras, where it is a very rare surname, Venezuela, and Chile, where it is an extremely rare surname. In absolute terms, it is commonest in Latin America and the Caribbean, particularly Honduras, Venezuela, and Mexico. More prevalently, Icilia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Icilia | Portugal, Venezuela, Italy, Brazil, India |