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Cognomen Langdon (Langdon
, 兰登
, Лангдон
) , around the globe, is a common last name. The surname Langdon is characteristic of Grenada, where it is a common surname, Jersey, where it is quite a common surname, and Australia, where it is quite a rare surname. Not in comparison with a country's population, this name is the most popular in the United States, the United Kingdom, and Australia. Very seldom, Langdon is the forename as well as the last name.