Cognomen 罗金 (Rogin 
, 罗金 
, Roukin 
) , around the world, is quite a rare family name. The family name 罗金 is habitual in Romania, where it is quite a rare surname, Croatia, where it is a rare surname, and Israel. Measured by absolute frequency, this name is the most popular in Romania, the United States, and China. Likewise, 罗金 is the forename as well as the last name.