In all the world, Wichak (วิจักษณ์ 
, วิจักษ์ , Wichak 
) is a rare principally boy's, but very seldom female first name. The given name Wichak is characteristic of South-eastern Asia, particularly Thailand, where it is quite a rare primarily masculine, but scarcely feminine name. Very seldom, Wichak is the last name as well as the forename.