Family name Elcidio (Elcidio 
) , all around the world, is an extremely rare last name. The family name Elcidio is habitual in Latin America and the Caribbean, particularly Argentina, where it is an extremely rare surname, and Venezuela. Much more frequently, Elcidio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Elcidio | Mozambique, South Africa, Brazil, United States, Argentina |
Melo, Bastos, Junior, Valdez, Manjate, Machado, Santana, Alvarez, Almeida, Andrade, Castedo, Pereira, Jantsch, Navarro, Freitas, Fonseca, Quiraque, Martinez, Manhique, Macuacua, Silveira, Chilaule, Amorim, Artero, Araujo, Soares, Muhl, Cruz, Dias, Lima, Silva, Sousa, Souza, Alves, Andre, Costa, Ferreira, Cossa, Paula, Rocha, Gomes, Lopes, Jesus, Tembe, Nunes, Faria, Filho, Santos, Cunha, and Oliveira