Last name Wichaikul (Wichaikul 
) , across the world, is a rare surname. The cognomen Wichaikul is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
Sopha, Panitan, Paiboon, Rachata, Jadsada, Jatsada, Jiratha, Nittaya, Surapong, Surachet, Supranee, Chitipun, Bunchana, Kanyarat, Kulruedee, Jureerat, Juthamad, Noppawee, Nungruthai, Wisarinee, Yuppadee, Suppachok, Kityarin, Komkrit, Chayapa, Chaiyot, Ariya, Daeng, Naris, Wanna, Wirat, Samart, Suchin, Aranya, Lalada, Jandee, Supphachok, Wetaka, Sasipim, Saowapa, Sirikul, Sirirat, Sirapop, Supanee, Sumoltip, Seranee, Sorrayut, Auayporn, Mantana, and Chaweewan