Family name Saiyoi (Saiyoi 
) , around the globe, is a very rare cognomen. The surname Saiyoi is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, Saiyoi is the forename as well as the last name.
Atitiya, Woravit, Chatwilai, Donlaporn, and Phrapalad Panya