Cognomen Viyada (วิยะดา 
, วิยดา , Viyada 
) , throughout the world, is a very rare surname. The family name Viyada is characteristic of Thailand, where it is an extremely rare surname, China, and India. Much more prevalently, Viyada is the forename as well as the last name.
Gow, Tamprateep, Nonpraiwan, Engchuan, Wachteng, Chandittawong, Puttawong, Puangkaew, Dheeranoot, Taveeprechachat, Wongsuwan, Wongwigkarn, Xaysanasy, Simasathien, Chantaburi, Wimonchailerk, Charuchinda, Pattanapong, Phounsavath, Durongkavaroj, Lertvanichpisal, Wanthanapukdee, Punvilai, Khiaochan, Kalharat, Bhongthong, Baru, Pinyo, Puntu, Naeak, Marson, Seekacha, Namrob, Maneein, Malakul, Muneoka, Tangsaksathid, Saeheng, Schultz, Chawala, Kavikul, Pawutiyapong, Praekpan, Promyong, Rodclay, Maneejam, Saengnil, Songsiri, Suwanno, and Ratanasirisuphya