Surname กุญแจ (Kunci 
, กุญแจ 
, Keyd 
) , in the world, is quite a rare family name. The surname กุญแจ is habitual in Indonesia, where it is a rare surname, Thailand, where it is a very rare surname, and Turkey. Not in comparison with a country's population, the name is most common in Indonesia, India, and Thailand. Likewise, กุญแจ is the forename as well as the last name.