NOCs at the 1904 Summer Olympics
NOCs in green participated. The darker, the more participants. World map is not historically correct.
| Country | Men | Women | Total | |
|---|---|---|---|---|
 AUS |
Australia | 1 | 0 | 1 |
 CAN |
Canada | 54 | 0 | 54 |
 CUB |
Cuba | 3 | 0 | 3 |
 GER |
Germany | 18 | 0 | 18 |
 GBR |
Great Britain | 4 | 0 | 4 |
 GRE |
Greece | 14 | 0 | 14 |
 HUN |
Hungary | 4 | 0 | 4 |
 ITA |
Italy | 1 | 0 | 1 |
 RSA |
Cape Colony | 8 | 0 | 8 |
 USA |
United States | 537 | 6 | 543 |
| Total | 644 | 6 | 650 |