Family name Saiyon (สายยนต์ 
, สายยน , Saiyon 
) , all over the world, is a rare cognomen. The surname Saiyon is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. More frequently, Saiyon is the forename as well as the last name.
Soe, Artnasiaw, Chumchan, Khonraeng, Klangnok, Panatkao, Puniramoon, Jongsiri, Jianphan, Angsupan, Williams, Setsathit, Srijaroen, Chingsapan, Phoobanthad, Techasuwan, Srathongchom, Laksanasut, Sirivarakarn, Wongwean, Thongjumrat, Saibunphong, Nopkars, Saha, Sopa, Burns, Toepa, Medina, Somnuk, Bunman, Ramsey, Upajanto, Nopkas, Seskhuntod, Somphet, Channew, Khandon, Phonsri, Phosena, Joinusaeng, Turisut, Wongta, and Panyapoontragul