Last name 朗森 (Ronson 
, Lunson , 朗森) , all over the world, is quite a rare surname. The family name 朗森 is habitual in the United Kingdom, where it is a rare surname, Australia, and Canada. Measured by absolute frequency, the name is most common in the United Kingdom, the United States, and Canada. Also, 朗森 is the forename as well as the last name.