Family name Gertum (Gertum 
) , throughout the world, is a very rare cognomen. The family name Gertum is characteristic of Brazil, where it is an extremely rare surname, and the United States. Very seldom, Gertum is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gertum | Brazil, United States |
| felipe assumpção gertum person identified in the Museu da Pessoa collection, BR (b. 1958) |
|