Cognomen กล่อง (Klong 
, กล่อง, Thebox) , around the globe, is a rare family name. The family name กล่อง is characteristic of South-eastern Asia, particularly Malaysia, where it is a rare surname, Indonesia, where it is a very rare surname, and Vietnam. Not in comparison with a country's population, the name is most common in Malaysia, Indonesia, and the United States. More prevalently, กล่อง is the forename as well as the last name.