Family name Sdney (Sdney 
) , all around the world, is an extremely rare last name. The cognomen Sdney is characteristic of Latin America and the Caribbean, particularly Brazil, where it is an extremely rare surname. Predominantly, Sdney is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sdney | South Africa, Brazil, United States, Democratic Republic of the Congo |
Sid, Grossi, Junior, Machado, Morgado, Santana, Almeida, Cardoso, Barreto, Barbosa, Batista, Pereira, Peixoto, Reckert, Ribeiro, Meireles, Santiago, Teixeira, Ferreira, Oliveira, Marcelino, Magalhaes, Grassi, Aguiar, Santos, Maciel, Mata, Maia, Sena, Cruz, Baia, Rosa, Reis, Ruas, Dias, Lima, Alcantara, Matos, Mboko, Sales, Silva, Souza, Costa, Brito, Pires, Ramos, Gomes, Jesus, Mello, and Nascimento