Cognomen Opangault-Iloy (Opangault-Iloy 
) , around the globe, is a rare family name. The cognomen Opangault-Iloy is habitual in Sub-Saharan Africa, particularly the Democratic Republic of the Congo, where it is a rare surname. Parts of the name also exists independently as a last name Opangault, and a last name Iloy.
| VARIANT | COUNTRY |
|---|---|
| Opangault-Iloy | Democratic Republic of the Congo |