Cognomen John Deiby (John Deiby 
) , throughout the world, is an extremely rare surname. Much more frequently, John Deiby is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| John Deiby | Peru, Ecuador, Colombia, Costa Rica |
Perez Duarte, Garcia Arrubla, Quintero Restrepo, and Morales Gomez