Family name Gilcy (Gilcy 
) , worldwide, is an extremely rare cognomen. Much more frequently, Gilcy is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gilcy | Philippines, Democratic Republic of the Congo, Brazil, United States, India |
Saba, Opilas, Martins, Sanchez, Almeida, Azevedo, Camargo, Cornejo, Batista, Kuwakino, Peralta, Resende, Rezende, Freitas, Onorato, Cicheleiro, Oliveira, Mocambito, Rodrigues, Guimaraes, Travassos, Fernandes, Vieira, Oestreich, Junior, Kumini, Ando, Damm, Lima, Silva, Sousa, Souza, Assis, Costa, Cunha, Braga, Pinto, Gomes, Nunes, Ilaga, Santos, Araujo, Abelon, Aquino, Castro, Campos, Cabral, George, and Alexandrino