Surname Siilvaa (Siilvaa 
) , in all the world, is a very rare last name. The family name Siilvaa is characteristic of Uruguay, where it is a rare surname, Portugal, where it is a very rare surname, and Colombia. Measured by absolute frequency, it most frequently occurs in Latin America and the Caribbean, particularly Brazil, Colombia, and Uruguay.
Alo, Steeh, Aleex, Adrii, Chris, Celee, Bruno, Bruna, Biiah, Patty, Paola, Pedro, David, Dudaa, Guiih, Larii, Lesly, Lucas, Luiis, Luiiz, Luaan, Joana, Sarah, Miila, Marii, Yuri, Ana, Mary, Miih, Anaa, Anna, Rosy, Rute, Deeh, Davi, Gaby, Joyce, Guuh, Leeh, Leeo, Lili, Luan, Luuh, Jeeh, Nano, Neey, Nena, Elii, Giih, and Jesii