Last name 朗西 (Rangsit 
, Lunghi 
, 朗西 
) , in the entire world, is quite a common family name. The family name 朗西 is habitual in Italy, where it is quite a rare surname, Malta, and Luxembourg. Not in comparison with a country's population, this name is the most popular in Italy, Argentina, and the United States. Much less frequently, 朗西 is the forename as well as the last name.