Cognomen Mathusalem (Mathusalem 
) , worldwide, is a very rare surname. The last name Mathusalem is habitual in Germany, where it is a very rare surname, Brazil, where it is an extremely rare surname, and France. In absolute terms, it most frequently occurs in Brazil, Germany, and Mexico. More prevalently, Mathusalem is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mathusalem | Germany, South Africa, Philippines, Brazil, Mexico |