Surname Деман (Deman 
, Demann 
, Деман 
) , around the globe, is quite a common last name. The last name Деман is habitual in Western Europe, particularly Belgium, where it is quite a common surname, Luxembourg, where it is quite a rare surname, and France. Measured by absolute frequency, this name is the most popular in Belgium, France, and the United States. Likewise, Деман is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Deman | Belgium, United States, India, Iraq, France |
| Demann | Germany, United States, India, Canada, France |
| Деман | Russia, Ukraine |
| Demanes | France, United States, Philippines |