Family name Gelwin (Gelwin 
) , all over the world, is an extremely rare surname. The surname Gelwin is habitual in Latin America and the Caribbean, particularly Nicaragua, where it is a very rare surname, Honduras, and Venezuela. Much more frequently, Gelwin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gelwin | Indonesia, Philippines, Tanzania, India, Peru |