Last name جوين (Gwyn 
, Gwynn 
, Guin ) , globally, is a common family name. The surname جوين is habitual in Paraguay, where it is quite a common surname, India, where it is quite a rare surname, and the United States. In absolute terms, it most frequently occurs in India, the United States, and France. Much less frequently, جوين is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gwyn | Australia, United Kingdom, United States, India, Malaysia |
| Gwynn | Paraguay, France, United Kingdom, United States, India |
| Guin | France, United Kingdom, United States, India, Malaysia |
| جوين | Iraq, Yemen, Saudi Arabia, Iran |