Cognomen Monsou (Monsou 
) , all over the world, is a very rare family name. The family name Monsou is characteristic of Argentina, where it is a very rare surname, France, and Netherlands. In absolute terms, it is the most numerous in France, Argentina, and Nigeria. Very seldom, Monsou is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Monsou | France, Argentina, United States, Netherlands, Nigeria |