NOCs at the 420 BCE Ancient Olympics
NOCs in green participated. The darker, the more participants. World map is not historically correct.
| Country | Men | Women | Total | |
|---|---|---|---|---|
 AGS |
Argos | 1 | 0 | 1 |
 ELI |
Elis | 1 | 0 | 1 |
 SKS |
Kos | 1 | 0 | 1 |
 LEP |
Lepreon | 1 | 0 | 1 |
 MAI |
Mainalos | 1 | 0 | 1 |
 SIR |
Siracusa | 1 | 0 | 1 |
 SPA |
Sparta | 1 | 0 | 1 |
| Total | 7 | 0 | 7 |