Surname גדיס (Gaddis 
, גדיס ) , all over the world, is quite a common cognomen. The last name גדיס is characteristic of the United States, where it is quite a rare surname, Israel, and New Zealand, where it is a rare surname. Measured by absolute frequency, it is the most numerous in the United States, Israel, and Egypt. Much less frequently, גדיס is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gaddis | Canada, Japan, United States, Egypt, Israel |
| גדיס | Israel |