Family name Glwadis (Glwadis 
) , all over the world, is an extremely rare last name. The family name Glwadis is habitual in Southern Europe, particularly Spain, where it is an extremely rare surname. Much more frequently, Glwadis is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Glwadis | Democratic Republic of the Congo, Cameroon, Spain |