Last name Лэнгдон (Langdon 
, Лэнгдон) , around the globe, is a common cognomen. The surname Лэнгдон 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. Measured by absolute frequency, it is commonest in the United States, the United Kingdom, and Australia. Very seldom, Лэнгдон is the forename as well as the last name.