Throughout the world, ไวยกิจ (ไวยกิจ 
, Vaiyakij) is a very rare largely masculine, but infrequently feminine first name. The given name ไวยกิจ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare largely masculine, but infrequently feminine name. More prevalently, ไวยกิจ is the last name as well as the forename.