Throughout the world, Vassao (Vassao 
) is an extremely rare unknown gender first name. Much more frequently, Vassao is the last name as well as the forename.
Mr, Jade, Jose, Joao, Joel, Jean, Juan, Nair, Nice, Nina, Elis, Elza, Eddy, Edna, Vana, Vera, Ilsa, Ilza, Ivan, Maria, Mario, Marta, Jair, Luan, Luiz, Luis, Ms, Sue, Ana, Tom, Ida, Mara, Suzy, Alex, Anna, Abel, Marco, Caio, Kaio, Kaue, Rosa, Rita, Ruth, Rute, Davi, Leni, Levi, Leda, Ciro, and Magna