Family name Siavosh (Siavosh 
) , around the world, is a very rare surname. The cognomen Siavosh is habitual in Iran, where it is a very rare surname, Canada, where it is an extremely rare surname, and Spain. Not in comparison with a country's population, it most frequently occurs in Iran, the United States, and Canada. Much more frequently, Siavosh is the forename as well as the last name.
Safai, Ranjbar, Golshan, Golpira, Talmood, Najitalakar, Naji-Talakar, Etemadi, Zarrasvand, Zahraie, Moghadam, Salmassi, Borojeni, Kakavand, Khonsari, Nikbakht, Ebrahimi, Hedayati, Hosseini, Eskandari, Hakimmaani, Poursabahian, Bozorgi, Bahrami, Akhtary, Aghassy, Asadi, Agahy, Riahi, Naaze, Mianab, Salami, Salimi, Salehi, Askari, Azimie, Varjavandi, Bahman, Ravari, Jalili, Honari, Mahdavi, Moghani, Sadeghi, Shahidi, Showghi, Senemar, Arasteh, Rahimi, and Shahrestani