Globally, Guy-Dieu (Guy-Dieu 
) is a rare male first name. The given name Guy-Dieu is characteristic of Sub-Saharan Africa, particularly the Democratic Republic of the Congo, where it is a rare masculine name. Parts of the name also exists independently as a first name Guy, and a first name Dieu.
| VARIANT | COUNTRY |
|---|---|
| Guy-Dieu | Democratic Republic of the Congo |