Surname 兰登 (Landon 
, Landen , Langdon ) , in the world, is a common family name. The family name 兰登 is characteristic of Grenada, where it is a common surname, Jersey, where it is quite a common surname, and New Zealand, where it is quite a rare surname. Not in comparison with a country's population, it most frequently occurs in the United States, the United Kingdom, and Australia. Also, 兰登 is the forename as well as the last name.