Family name Petkou (Petkou 
) , globally, is a rare cognomen. The family name Petkou is habitual in Greece, where it is quite a rare surname, Canada, where it is an extremely rare surname, and Germany. Very seldom, Petkou is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Petkou | Canada, United States, Germany, Greece, Spain |
| anastasios christou petkou Greek physicist, GR |
|