Cognomen Amoussou-Gagnon (Amoussou-Gagnon 
) , across the world, is an extremely rare last name. The family name Amoussou-Gagnon is habitual in Northern America, particularly Canada, where it is a very rare surname. Parts of the name also exists independently as a last name Amoussou, and a last name Gagnon.
| VARIANT | COUNTRY |
|---|---|
| Amoussou-Gagnon | Canada |