Family name 科辛 (Cosin 
, 科辛 
, Cosyn 
) , all over the world, is quite a rare surname. The family name 科辛 is characteristic of Luxembourg, where it is quite a rare surname, Belgium, and Papua New Guinea. Measured by absolute frequency, this name is the most popular in Spain, Belgium, and Brazil. Much less frequently, 科辛 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Cosin | Brazil, Germany, France, United States, Spain |
| 科辛 | China |
| Cosyn | Germany, France, United States, Belgium, Spain |
| Kossin | Brazil, Germany, Papua New Guinea, United States, Philippines |