Surname Gaston-Bellegarde (Gaston-Bellegarde 
) , all around the world, is a very rare cognomen. The cognomen Gaston-Bellegarde is habitual in Belgium, where it is a very rare surname, Portugal, and South Africa. In absolute terms, the name is most common in France, Belgium, and South Africa. Parts of the name also exists independently as a first name Gaston, and a last name Bellegarde.
| VARIANT | COUNTRY |
|---|---|
| Gaston-Bellegarde | Belgium, United Kingdom, South Africa, France, Portugal |