Family name Du Roy (Du Roy 
) , throughout the world, is a very rare cognomen. The cognomen Du Roy is habitual in Western Europe, particularly Belgium, where it is a rare surname, and France, where it is a very rare surname. Very seldom, Du Roy is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Du Roy | France, Belgium |
|
albert du roy Belgian journalist, BE (b. 1938) |
|
| hugues du roy de blicquy BE (b. 1931) |
|
|
| olivier du roy BE (b. 1933) |
|