Cognomen Wichitchai (วิชิตชัย 
, Wichitchai ) , all around the world, is a very rare family name. The cognomen Wichitchai is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much more prevalently, Wichitchai is the forename as well as the last name.
Katip, Pattanasoon, Chaiyachit, Ariyasoonthorn, Sudprasert, Hamwattanaphong, Thainapreaw, Taechotirote, Ruamphorn, Phiromsuk, Kaewsaart, Chotchuang, Chaiyajit, Wongsang, Thathong, Panjamrat, Khiaonoi, Changkit, Srisaart, Bintaprasit, Chauyseenual, Saiwong, Onkaew, Thepla, Ratderm, Piluek, Pacthnark, Saenya, Maitam, Raksa, Rattanabut, and Sangprateeptham