Around the globe, Giagtzoglou (Giagtzoglou 
) is an extremely rare unknown gender first name. Predominantly, Giagtzoglou is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Giagtzoglou | Brazil, Germany, United States, Greece |
Sam, Panagiotis, Vasileios, Dimitrios, Iordanis, Efthymia, Nikolaos, Georgios, Katirina, Christos, Angeliki, Sofoklis, Ourania, Olympia, Ioannis, Charalampos, Iasonas, Gabriel, Dimitra, Clarice, Anatoli, Stavros, George, Petros, Kostas, Samuel, Marios, Eleni, Susan, Maria, Tom, Venetia, and Konstantinos