Family name Tousin (Tousin 
) , globally, is a very rare cognomen. The surname Tousin is habitual in Belgium, where it is a very rare surname, France, and Nigeria, where it is an extremely rare surname. In absolute terms, it is commonest in Belgium, France, and India. More frequently, Tousin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tousin | Belgium, Nigeria, India, France, Brazil |