Surname Herwyn (Herwyn 
) , throughout the world, is a very rare cognomen. The cognomen Herwyn is habitual in Belgium, where it is a rare surname, France, where it is a very rare surname, and Venezuela. Likewise, Herwyn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Herwyn | Belgium, Philippines, France, United States, Venezuela |
| philippe jacques herwyn French politician, FR (b. 1750) |
|
|
| pierre-antoine herwyn de nevèle French politician, FR (b. 1753) |
|
|
| charles herwyn BE |
|