Cognomen Κοσμόπουλος (Kosmopoulos 
, Κοσμόπουλος ) , in the world, is a rare last name. The last name Κοσμόπουλος is characteristic of Greece, where it is quite a rare surname, Australia, where it is a very rare surname, and Canada. Measured by absolute frequency, it most frequently occurs in Greece, the United States, and Australia.
| VARIANT | COUNTRY |
|---|---|
| Kosmopoulos | Canada, Australia, Greece, Germany, United States |
| Κοσμόπουλος | Greece |
| λιάκος κοσμόπουλος GR (b. 1800) |
|
|
|
δημήτρης κοσμόπουλος Greek poet, GR (b. 1964) |
|
| κωνσταντίνος κοσμόπουλος Greek politician, GR (b. 1928) |
|
|
| μιχάλης κοσμόπουλος Greek archaeologist, GR (b. 1963) |
|
|
| κώστας κοσμόπουλος Greek actor, GR |
|
|
| δημοσθένης κοσμόπουλος Greek archaeologist (1983-), GR (b. 1983) |
|
|
| κωνσταντίνος κοσμόπουλος |
|