Surname Ardeu (Ardeu 
) , around the world, is a very rare cognomen. The last name Ardeu is habitual in Romania, where it is a rare surname, Brazil, where it is an extremely rare surname, and Canada. Not in comparison with a country's population, it is commonest in Romania, Brazil, and the United States. Much less frequently, Ardeu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ardeu | Russia, Spain, Brazil, United States, Romania |