Surname Joannidou (Joannidou 
) , all over the world, is a very rare last name. The family name Joannidou is habitual in Germany, where it is a very rare surname, the United Kingdom, where it is an extremely rare surname, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Joannidou | United States, United Kingdom, Germany |
| helene joannidou (b. 1938) |
|