Cognomen 洛根 (Logan 
, 洛根 
, Lonegan 
) , in the world, is a widespread surname. The cognomen 洛根 is habitual in Isle of Man, where it is quite a common surname, Belize, and Jamaica (explore the name in all countries). Not in comparison with a country's population, it most frequently occurs in the United States, the United Kingdom, and Canada. Also, 洛根 is the forename as well as the last name.