Cognomen Houtraus-Gauy (Houtraus-Gauy 
) , worldwide, is an extremely rare family name. Much more prevalently, Houtraus-Gauy is the forename as well as the last name. Parts of the name also exists independently as a first name Houtraus, and a last name Gauy.
| VARIANT | COUNTRY |
|---|---|
| Houtraus-Gauy | Democratic Republic of the Congo |