Family name ถนัดกิจ (ถนัดกิจ 
, Thanatkit , Thanadkit ) , in all the world, is a rare last name. The cognomen ถนัดกิจ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. More frequently, ถนัดกิจ is the forename as well as the last name.