Cognomen Gaetam (Gaetam 
) , around the world, is a very rare surname. The last name Gaetam is characteristic of Canada, where it is an extremely rare surname, Argentina, and Brazil. In absolute terms, it is the most numerous in India, Brazil, and Canada. More prevalently, Gaetam is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gaetam | France, Democratic Republic of the Congo, Brazil, United States, India |