Surname Incham (Incham 
, อินฉ่ำ) , worldwide, is a rare last name. The cognomen Incham is characteristic of Thailand, where it is a rare surname, Malaysia, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. Measured by absolute frequency, it is the most numerous in Thailand, China, and Malaysia. Much less frequently, Incham is the forename as well as the last name.