Surname Chiap (เจียบ 
, เฉียบ , Chiap 
) , in all the world, is a rare last name. The family name Chiap is characteristic of Malaysia, where it is a rare surname, New Zealand, where it is a very rare surname, and Italy. Measured by absolute frequency, it is commonest in Malaysia, Italy, and Thailand. More prevalently, Chiap is the forename as well as the last name.