Surname Cireneu (Cireneu 
) , in the entire world, is an extremely rare last name. The cognomen Cireneu is habitual in Venezuela, where it is an extremely rare surname, Brazil, and the United States. Much more prevalently, Cireneu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Cireneu | Brazil, Venezuela, South Africa, United States |
May, Mãozinha, Santos, Stiipp, Araujo, Castro, Coelho, Bastos, Borges, Rohden, Rempel, Diorio, Junior, Scabelo, Pereira, Ribeiro, Leonardo, Oliveira, Schimpchak, Rodrigues, Guglielmi, Andreghetto, Magnus, Maciel, Velho, Jesus, Maia, Melo, Cruz, Kuhn, Rosa, Reis, Lima, Lion, Moura, Silva, Verginassi, Sousa, Alves, Costa, Bande, Borsa, Bosse, Pelin, Rocha, Deves, Liebl, Lopes, Souza, and Rosemberger