Cognomen Mannoy (Mannoy 
) , in the world, is a very rare last name. The cognomen Mannoy is habitual in Belgium, where it is a rare surname, France, where it is an extremely rare surname, and Philippines. Much less frequently, Mannoy is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mannoy | Belgium, Philippines, France |