Family name Syene (Syene 
) , across the world, is an extremely rare surname. Much more frequently, Syene is the forename as well as the last name.
Cox, Marcelino, Oliveira, Troncoso, Revoredo, Custodio, Monteiro, Mandelli, Ironcoso, Fonseca, Freitas, Johnson, Ribeiro, Batista, Balidio, Friedmann, Barbosa, Machado, Vargas, Toledo, Jasmin, Gondim, Cooper, Aquino, Acosta, Santos, Jones, Brito, Souza, Silva, Lima, Settles, and Gwatinyanya