Cognomen Sebastao (Sebastao 
, Sebastão 
) , in the world, is a rare last name. The surname Sebastao is characteristic of Angola, where it is a rare surname, Portugal, where it is a very rare surname, and Brazil, where it is an extremely rare surname. Also, Sebastao is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sebastao | Portugal, South Africa, United States, India, Brazil |
| Sebastão | Angola, Brazil |
Vaz, Moraes, Santos, Araujo, Amaral, Campos, Cintra, Junior, Vieira, Martins, Andrade, Cardoso, Camargo, Barbosa, Pereira, Ribeiro, Sobrinho, Carvalho, Ferreira, Oliveira, Conceicao, Rodrigues, Macedo, Filho, Faria, Elias, Mota, Melo, Cruz, Prim, Rosa, Reis, Leao, Lima, Neto, Maria, Goncalves, Moura, Silva, Souza, Alves, Anjos, Costa, Pedro, David, Gomes, Lemos, Neves, Santo, and Fernandes