NOCs at the 520 BCE Ancient Olympics
NOCs in green participated. The darker, the more participants. World map is not historically correct.
| Country | Men | Women | Total | |
|---|---|---|---|---|
 HER |
Heraia | 1 | 0 | 1 |
 KRS |
Karystos | 1 | 0 | 1 |
 KRT |
Kroton | 2 | 0 | 2 |
 TAR |
Taranto | 1 | 0 | 1 |
 THB |
Thebes | 1 | 0 | 1 |
| Total | 6 | 0 | 6 |